On January 1, 2016, F Corp. issued 2,500 of its 9%, $1,000 bonds for $2,596,000. These bonds were to mature on January 1, 2026, but were callable at 101 any time after December 31, 2019. Interest was payable semiannually on July 1 and January 1. On July 1, 2021, F called all of the bonds and retired them. The bond premium was amortized on a straight-line basis. Before income taxes, F Corp.'s gain or loss in 2021 on this early extinguishment of debt was:

• $73,000 gain.

• $25,000 loss.

• $27,800 gain.

• $18,200 gain.

Please explain how to get the answer by step by step. Thank you,