1. When the recipient of a disability retirement allowance is determined by the Board to be no longer disabled, the allowance must be cancelled.
2. An employee retired on account of disability whose benefit is cancelled may:
(a) Apply for a refund of unused contributions;
(b) Suspend the monthly benefit until eligible for service retirement; or
(c) Elect a service retirement reduced for the retired employee’s age if the retired employee has the service credit necessary to retire.