Option 1.
Upon the person's death, the person's retirement allowance shall be continued throughout the life of and paid to such person as the person shall nominate by written designation duly acknowledged and delivered to the board of trustees at or prior to the time of the person's retirement, provided that in the event the person's designated beneficiary predeceases the person, then the person's retirement allowance shall be adjusted at that time to the amount determined pursuant to subsection 1 of section 169.324 at the time of the retirement of the person, or
Option 2.
Upon the person's death, one-half of the person's retirement allowance shall be continued throughout the life of and paid to such person as the person shall nominate by written designation duly acknowledged and filed with the board of trustees at or prior to the time of the person's retirement, provided that in the event the person's designated beneficiary predeceases the person, then the person's retirement allowance shall be adjusted at that time to the amount determined under subsection 1 of section 169.324 at the time of the person's retirement, or
Option 3.
Upon the person's death, no benefits shall be paid to any beneficiary or estate of the retired member. This optional benefit is actuarially increased over the benefit formula providing for benefits at death.
§ 169.326, RSMo