Minimum Retirement Age and OPM FERS Disability Retirement in Light of VERA Early Out Option

I was approved for FERS disability retirement at age 50. I understand that my regular minimum retirement age is 57 (based on age) in OPM's charts for standard retirement. However, I would have been eligible for an early out (VERA) at age 53 (over 50 and 20 years of service). VERAs are not always offered, though, so what happens if one is offered in the year I would have been eligible? Does it matter, or will IRS only want to use the standard retirement age 57 as the minimum?

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