; (II) the amount of the officer’s monthly annuity payment if the officer elects to make the lump-sum payment and receive an amended annuity that includes the application of paragraph (1); and (III) the amount of such officer’s monthly annuity payment if the officer does not make such an election; and (ii) consistent with the requirements of subparagraph (D), not later than 90 days after receipt of the estimate under clause (i), irrevocably elect to make the lump-sum payment to the Office. (C) If a law enforcement officer makes an election pursuant to subparagraph (B)(ii), such officer shall make a lump-sum payment to the Office equal to the difference between— (i) the amount that would have been contributed by the officer and the employer under section 8334 during the 3 consecutive years used to determine average pay (as described under section 8331(4)) if the rate of basic pay of the officer during such period of years included any premium pay described in section 5547(a) that would have been received by a law enforcement officer but for the limitation provided in such section