A. Upon application for retirement any member may elect to receive his benefit in a retirement allowance payable throughout his life, or he may elect at that time to receive the actuarial equivalent of his retirement allowance in a reduced retirement allowance payable throughout life, with the provisions that:
(1) Option 2. Upon his death his reduced retirement allowance shall be continued throughout the life of and paid to the spouse to whom he was married at the time of his retirement.
(2) Option 3. Upon his death one-half of his reduced retirement allowance shall be continued throughout the life of and be paid to the spouse to whom he was married at the time of his retirement.
(3) Option 4. Some other benefit or benefits shall be paid either to the member or to the person or persons he nominated, provided the other benefit or benefits, together with the reduced retirement allowance shall be certified by the actuary to be of equivalent actuarial value to his retirement allowance and shall be approved by the board.
B. A retiree cannot change the designation of beneficiary.
C. No changes in the option elected by the member, other than to correct administrative error, shall be permitted after sixty days from date of receipt of retirement application by the board.
D. A member may not elect a time or method of receipt of benefits which creates a death benefit which is more than incidental.
E. No distribution from the system shall be made in any year to the extent that such distribution would violate the requirements under Internal Revenue Code Section 401(a)(9), including the minimum distribution incidental rules.