(1)
In the case of any participant or former participant providing a survivor annuity benefit under subsection (b) of this section for a former spouse—
(A)
such participant may elect, or
(B)
a spousal agreement or court order under section
4060
(b)(1) of this title may provide for,
an additional survivor annuity under this subsection for any other former spouse or spouse surviving the participant, if the participant satisfactorily passes a physical examination as prescribed by the Secretary of State.