If a deceased disabled retiree had thirty (30) years or more of creditable service, and death occurred after June 30, 1981, but prior to the retiree receiving twelve (12) monthly retirement payments, the surviving spouse may elect to receive an life annuity under the provisions of Retirement Option 2 as the death benefit. Such a benefit shall be based upon the retirement the deceased member would have been entitled to at the time of death under Retirement Option 2. The Retirement Option 2 death benefit shall be in lieu of all other benefits to which a surviving spouse or other beneficiary might otherwise be entitled to receive.
Okla. Admin. Code § 715:10-15-20