(a) Except as provided by Subsections (b) and (c), if a member who has at least eight years of service credit in the elected class of membership dies, a death benefit annuity is payable in an amount computed at the rate of one-half of the standard service retirement annuity to which the member would have been entitled at the member's age at the time of death or at the age of 60, whichever is later.
(b) The annuity provided by this section is payable only to the member's surviving spouse. If the member is not survived by a spouse, a benefit may not be paid under this section.
(c) An annuity may not be paid under this section if, at the time of death, the member was eligible to select a death benefit annuity under Section 814.301.