; Surplus Average Indexed Monthly Earnings . (3) Adjustment of surplus earnings for purposes of determining surplus AIME Section 215(b)(3) of such Act ( 42 U.S.C. 415(b)(3) ) is amended— (A) in subparagraph (A), by striking subparagraph (B) and inserting subparagraph (C) and by inserting and determination of basic average indexed monthly income after paragraph (2) ; (B) by redesignating subparagraph (B) as subparagraph (C)