(a) (1) Except as otherwise provided in this section, in the event any member who has ten or more years of credited service or any former member with ten or more years of credited service and who is entitled to a deferred annuity, pursuant to section twenty- one of this article, may at any time prior to the effective date of his or her retirement, by written declaration duly executed and filed with the board of trustees, in the same manner as if he or she were then retiring from the employ of a participating public employer, elect option A provided in section twenty-four of this article and nominate a beneficiary whom the board finds to have had an insurable interest in the life of the member. Prior to the effective date of his or her retirement, a member may revoke his or her election of option A and nomination of beneficiary and he or she may again prior to his or her retirement elect option A and nominate a beneficiary as provided in this subsection. Upon the death of a member who has an option A election in force, his or her beneficiary, if living, shall immediately receive an annuity computed in the same manner in all respects as if the same member had retired the day preceding the date of his or her death, notwithstanding that he or she might not have attained age sixty years, and elected the said option A. If at the time of his or her retirement a member has an option A election in force, his or her election of option A and nomination of beneficiary shall thereafter continue in force. As an alternative to annuity option A, a member or former member may elect to have the preretirement death benefit paid as a return of accumulated contributions in a lump sum amount to any beneficiary or beneficiaries he or she chooses.
(2) In the event any member or former member, who first became a member of the Public Employees Retirement System after the effective date of amendments made to this section during the 2006 regular legislative session and who has ten or more years of credited service and who is entitled to a deferred annuity, pursuant to section twenty-one of this article: Dies without leaving a surviving spouse; but leaves surviving him or her a child who is financially dependent on the member by virtue of a permanent mental or physical disability upon evidence satisfactory to the board; and has named the disabled child as sole beneficiary, the disabled child shall immediately receive an annuity computed in the same manner in all respects as if the member had: (A) Retired the day preceding the date of his or her death, notwithstanding that he or she might not have attained age sixty or sixty-two years, as the case may be; (B) elected option A provided in section twenty-four of this article; and (C) nominated his or her disabled child as beneficiary. A member or former member with ten or more years of credited service, who does not leave surviving him or her a spouse or a disabled child, may elect to have the preretirement death benefit paid as a return of accumulated contributions in a lump sum amount to any beneficiary or beneficiaries he or she chooses.