The amount of the reduction for early retirement specified in paragraph (1)—
(A) for old-age insurance benefits, wife’s insurance benefits, and husband’s insurance benefits, shall be the amount specified in such paragraph for the first 36 months of the reduction period (as defined in paragraph (6)) or adjusted reduction period (as defined in paragraph (7)), and five-twelfths of 1 percent for any additional months included in such periods; and
(B) for widow’s insurance benefits and widower’s insurance benefits, shall be periodically revised by the Commissioner of Social Security such that— (i) the amount of the reduction at early retirement age as defined in section 416( l ) of this title shall be 28.5 percent of the full benefit; and (ii) the amount of the reduction for each month in the reduction period (specified in paragraph (6)) or the adjusted reduction period (specified in paragraph (7)) shall be established by linear interpolation between 28.5 percent at the month of attainment of early retirement age and 0 percent at the month of attainment of retirement age.