; or (bb) a lump-sum payment that was received or to which the entitlement arose before the date on which such impacted Federal employee became an impacted Federal employee; (III) is not entitled to an annuity under either such chapter; and (IV) as of the date of the enactment of this Act, does not hold a position subjecting such impacted Federal employee to either such chapter. (B) Buyback (i) In general At the time an impacted Federal employee described in clause (vi) selects a payment under section 2(a)(2) or, in the case of a payment under section 2(b), not later than 90 days after the impacted Federal employee is notified of the payment under section 3, such impacted Federal employee may elect to pay to the Treasury of the United States to the credit of the Fund an amount equal to— (I) the amount paid to such impacted Federal employee under section 8342 or 8424 of title 5, United States Code, after the impacted Federal employee became an impacted Federal employee plus interest; or (II) any portion of the amount described in clause (i) that is greater than zero. (ii) Annuity rights reinstated (I) In general An impacted Federal employee that makes the election and payment under clause (i)— (aa) shall have restored the annuity rights of such impacted Federal employee that were voided by the receipt of, or becoming entitled to, the payment of a lump-sum credit under section 8342 or 8424 of title 5, United States Code, after such impacted Federal employee became an impacted Federal employee— (AA) in full in the case of a payment in the amount described in clause (i)(I); or (BB) in the case of a payment described in clause (i)(II), in equal proportion to such payment