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<TYPE>EX-99.77O RULE 10F-3
<SEQUENCE>6
<FILENAME>77o10.txt
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                                                            [LOGO OF BLACKROCK]

Rule 10f-3 Transaction Form

Acquisition of Securities During Affiliated Underwritings

PARTICIPATING FUNDS

.   U.S. Registered Funds (Name of Fund, Aladdin Ticker):
    BlackRock 2022 Global Income Opportunity Trust (BGIO)
    BlackRock Core Bond Trust - High Yield (BHK-HYLD)
    BlackRock Multi-Sector Income Trust - High Yield (BIT-HYLD)
    BlackRock Limited Duration Income Trust - High Yield (BLW-HYLD)
    BlackRock Dynamic High Income - Preferred Stock Portfolio (BR-DHI-PS)
    BlackRock Funds, BlackRock Global Long/Short Credit Fund (BR-GC)
    BlackRock Funds II, High Yield Bond Portfolio (BR-HIYLD)
    BlackRock Multi-Asset Income - High Yield Portfolio (BR-INC-HY)
    BlackRock Multi-Asset Income - Preferred Stock Portfolio (BR-INC-PS)
    BlackRock Managed Income - Preferred Stock Portfolio (BR-MI-PS)
    BlackRock Credit Strategies Income - High Yield (BR-MSBHY)
    Strategic Income Opportunities Fund (BR-SIP)
    BlackRock Strategic Global Bond Fund, Inc(BR-WI)
    BlackRock Global Long Short Credit Fund - High Yield Sleeve . (BRGC-HY)
    BlackRock High Yield Portfolio of BlackRock Series Fund, Inc (BVA-HI)
    BlackRock High Yield V.I. Fund (BVA-HY)
    BlackRock Debt Strategies Fund, Inc(DSU)
    BlackRock Corporate High Yield Fund, Inc. .( HYT)
    Brighthouse Funds Trust I - BlackRock High Yield Portfolio (MIST-HY)
    AST BlackRock Global Strategies Portfolio (US High Yield) (PRU-AA-HY)
    JNL/BlackRock Global Long Short Credit Fund (SMF_CC-GC)

THE OFFERING

KEY CHARACTERISTICS (COMPLETE ALL FIELDS)

Date of                    10-18-2017
Offering Commencement:

Security Type:             BND/CORP

Issuer                     The Goldman Sachs Group, Inc. (2049)

Selling Underwriter        Goldman Sachs & Co. LLC

Affiliated Underwriter(s)  [X] PNC Capital Markets LLC
                           [_] Other:

                                                                    Page 1 of 2

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Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]



List of Underwriter(s)  Goldman Sachs & Co. LLC,BB&T Capital Markets,a
                        division of BB&T Securities,LLC,BMO Capital Markets
                        Corp.,BNY Mellon Capital Markets,LLC,Citigroup Global
                        Markets Inc.,Fifth Third Securities,Inc.,J.P. Morgan
                        Securities LLC,KeyBanc Capital Markets Inc.,Merrill
                        Lynch,Pierce,Fenner & Smith Incorporated,Mizuho
                        Securities USA LLC,Morgan Stanley & Co. LLC,PNC
                        Capital Markets LLC,RBC Capital Markets,LLC,Scotia
                        Capital (USA) Inc.,SMBC Nikko Securities
                        America,Inc.,SunTrust Robinson Humphrey,Inc.,TD
                        Securities (USA) LLC,U.S. Bancorp
                        Investments,Inc.,Wells Fargo Securities,LLC,Academy
                        Securities,Inc.,CastleOak Securities,L.P.,Drexel
                        Hamilton,LLC,Mischler Financial Group,Inc.

TRANSACTION DETAILS

Date of Purchase        10-18-2017

Purchase Price/Share
(PER SHARE / % OF PAR)  $100 Total Commission, Spread or Profit          1.500%

1.  Aggregate Principal Amount Purchased (a+b)                   $  250,000,000

    a.  US Registered Funds
        (Appendix attached with individual Fund/Client
        purchase)                                                $  150,803,000

    b.  Other BlackRock Clients                                  $   99,197,000

2.  Aggregate Principal Amount of Offering                       $1,500,000,000

FUND RATIO
[Divide Sum of #1 by #2]
Must be less than 0.25                                                   0.1666

<PAGE>

Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


LEGAL REQUIREMENTS

OFFERING TYPE (CHECK ONE)

The securities fall into one of the following transaction types (see
Definitions):

[X] U.S. Registered Public Offering... [Issuer must have 3 years of continuous
                                       operations]
[_] Eligible Rule 144A Offering....... [Issuer must have 3 years of continuous
                                       operations]
[_] Eligible Municipal Securities
[_] Eligible Foreign Offering......... [Issuer must have 3 years of continuous
                                       operations]
[_] Government Securities Offering.... [Issuer must have 3 years of continuous
                                       operations]

TIMING AND PRICE (CHECK ONE OR BOTH)

[X] The securities were purchased before the end of the first day on which any
    sales were made, at a price that was not more than the price paid by each
    other purchaser of securities in that offering or in any concurrent
    offering of the securities; and
[_] If the securities are offered for subscription upon exercise of rights, the
    securities were purchased on or before the fourth day before the day on
    which the rights offering terminated.

FIRM COMMITMENT OFFERING (CHECK ONE)

[X] YES  The securities were offered pursuant to an underwriting or similar
[_] NO   agreement under which the underwriters were committed to purchase all
         of the securities being offered, except those purchased by others
         pursuant to a rights offering, if the underwriters purchased any of
         the securities.

NO BENEFIT TO AFFILIATED UNDERWRITER (CHECK ONE)

[X] YES  No affiliated underwriter was a direct or indirect participant in, or
[_] NO   benefited directly or indirectly from, the transaction.

Completed by:             Arushi Bhasin                     Date:   10-31-2017
                          --------------------------------         ------------
                          Global Syndicate Team Member

Approved by:              Steven DeLaura                    Date:   10-31-2017
                          --------------------------------         ------------
                          Global Syndicate Team Member

<PAGE>

Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]

DEFINITIONS

TERM                       DEFINITION
Fund Ratio                 Number appearing at the bottom of page 1 of 2 of
                           the Rule 10f-3 Report form. It is the sum of the
                           Funds' participation in the offering by the Funds
                           and other accounts managed by BlackRock divided by
                           the total amount of the offering.

Eligible Foreign Offering  The securities are sold in a public offering
                           conducted under the laws of a country other than
                           the United States and

                           (a) the offering is subject to regulation in such
                               country by a "foreign financial regulatory
                               authority," as defined in Section 2(a)(50) of
                               the Investment Company Act of 1940;

                           (b) the securities were offered at a fixed price to
                               all purchasers in the offering (except for any
                               rights to purchase securities that are required
                               by law to be granted to existing security
                               holders of the issuer);

                           (c) financial statements, prepared and audited as
                               required or permitted by the appropriate
                               foreign financial regulatory authority in such
                               country, for the two years prior to the
                               offering, were made available to the public and
                               prospective purchasers in connection with the
                               offering; and

                           (d) if the issuer is a "domestic issuer," i.e.,
                               other than a foreign government, a national of
                               any foreign country, or a corporation or other
                               organization incorporated or organized under
                               the laws of any foreign country, it (1) has a
                               class of securities registered pursuant to
                               section 12(b) or 12(g) of the Securities
                               Exchange Act of 1934 or is required to file
                               reports pursuant to section 15(d) of that act,
                               and (2) has filed all the material required to
                               be filed pursuant to section 13(a) or 15(d) of
                               that act for a period of at least 12 months
                               immediately preceding the sale of securities
                               (or for such shorter period that the issuer was
                               required to file such material)

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Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


TERM                           DEFINITION
Eligible Municipal Securities  The securities:

                               (a) are direct obligations of, or obligations
                                   guaranteed as to principal or interest by,
                                   a State or any political subdivision
                                   thereof, or any agency or instrumentality
                                   of a State or any political subdivision
                                   thereof, or any municipal corporate
                                   instrumentality of one or more States, or
                                   any security which is an industrial
                                   development bond (as defined in section
                                   103(c)(2) of Title 26) the interest on
                                   which is excludable from gross income under
                                   certain provisions of the Internal Revenue
                                   Code;

                               (b) are sufficiently liquid that they can be
                                   sold at or near their carrying value within
                                   a reasonably short period of time; and

                               (c) either

                                   (1) are subject to no greater than moderate
                                       credit risk; or

                                   (2) if the issuer of the municipal
                                       securities, or the entity supplying the
                                       revenues or other payments from which
                                       the issue is to be paid, has been in
                                       continuous operation for less than
                                       three years, including the operation of
                                       any predecessors, the securities are
                                       subject to a minimal or low amount of
                                       credit risk.

                               Also, purchases of municipal securities may not
                               be designated as group sales or otherwise
                               allocated to the account of any prohibited
                               seller (i.e., an affiliated underwriter).

Eligible Rule 144A Offering    The securities are sold in an offering where

                               (a) the securities are offered or sold in
                                   transactions exempt from registration under
                                   Section 4(2) of the Securities Act of 1933,
                                   Rule 144A thereunder, or Rules 501-508
                                   thereunder;

                               (b) the securities were sold to persons that
                                   the seller and any person acting on behalf
                                   of the seller reasonably believe to include
                                   qualified institutional buyers, as defined
                                   in Rule 144A ("QIBs"); and

                               (c) the seller and any person acting on behalf
                                   of the seller reasonably believe that the
                                   securities are eligible for resale to other
                                   QIBs pursuant to Rule 144A.

Government Securities Offering The security is issued or guaranteed as to
                               principal or interest by the United States, or
                               by a person controlled or supervised by and
                               acting as an instrumentality of the Government
                               of the United States pursuant to authority
                               granted by the Congress of the United States;
                               or any certificate of deposit for any of the
                               foregoing.

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Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]

TERM                              DEFINITION
U.S. Registered Public Offering.  The securities offered are registered under
                                  the Securities Act of 1933 that are being
                                  offered to the public.
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