20 C.F.R. § 228.21 Entitlement as a spouse or divorced spouse and as a survivor.
Title 20 - Employees' Benefits
If an individual is entitled to both a spouse or divorced spouse and survivor annuity, only the larger annuity will be paid. However, if the individual so chooses, he or she may receive the smaller annuity rather than the larger annuity.
Title 20: Employees' Benefits
PART 228—COMPUTATION OF SURVIVOR ANNUITIES
Subpart B—The Tier I Annuity Component
§ 228.21 Entitlement as a spouse or divorced spouse and as a survivor.
