; and (ii) ending with the month before the last month of life expectancy (as determined by the Commissioner of Social Security using reasonable actuarial assumptions) for the cohort of individuals who become eligible for an old-age insurance benefit in the same month as the individual. (D) The Commissioner of Social Security shall certify to the Managing Trustee of the Federal Old-Age and Survivors Insurance Trust Fund the amount of any lump sum payment payable to an individual under subparagraph (A) and, upon receipt of such certification, the Managing Trustee shall make payment of such lump sum payment to such individual from such Trust Fund. (E) An alternate monthly increase for an individual determined under this subparagraph shall be equal to the monthly increase for the individual that would be determined under paragraph (1) if such monthly increase were determined by substituting 1/2 for 2/3 in paragraph (6)(D). (F) (i) For purposes of determining the amount of any benefit payable under this title on the basis of the wages and self-employment income of an individual who makes an election under this paragraph, the amount of any such benefit shall be determined as if such individual’s old-age benefit had been increased under paragraph (1) without regard to this paragraph. (ii) For purposes of applying any reduction under subsection (k)(3)(A) to the monthly insurance benefit of an individual who makes an election under this paragraph, the amount of such individual’s old-age benefit shall be determined as if such old-age benefit had been increased under paragraph (1) without regard to this paragraph. .