(B)
(i) Notwithstanding subparagraph (A), any individual who is a member as of the effective date that applies with respect to such individual under section 663 of the National Defense Authorization Act for Fiscal Year 2000 may make the first such election during the 60-day period beginning on such effective date.
(ii) An election made under this subparagraph shall take effect on the first day of the first applicable pay period beginning after the close of the 60-day period referred to in clause (i).