a. Benefits payable under the variable annuity program shall be in addition to other benefits payable pursuant to this chapter.
b. In the case of a contributor who is a participant in the variable annuity program, an election, pursuant to section 13-523 of this chapter, to leave his or her accumulated deductions with the annuity savings fund and to continue to contribute to such fund shall be deemed to be an election to continue as a participant. If all of his or her accumulated deductions have already been credited to his or her account in the variable annuity savings fund, he or she may, subject to the provisions of such section, elect to continue as a participant.
c. In applying the provisions of paragraphs two, three and four of section 13-525 of this chapter in the case of a participant in the variable annuity program, the value of any units credited to his or her account in the variable annuity savings fund shall, for the purpose of determining his or her entitlement to, and the amount of, a withdrawal, be deemed to be part of his or her accumulated deductions, and the determination of the amount of annuity, pension-providing-for-increased-take-home-pay, and retirement allowance shall be made as if he or she were not a participant.
d. The provisions of section 13-561 of this chapter shall apply in the case of benefits under the variable annuity program.