On January 1, 2010, Goll Corp, issued 2,000 of its 10%, $1,000 bonds for $2,080,000. These bonds were to mature on January 1,2020 but were callable at 101 any time after December 31, 2013. Interest was payable semiannually on July 1 and January 1. On July 1, 2014, Goll called all of the bonds and retired them. Bond premium was amortized on a straight-line basis. Before income taxes. Goll's gain or loss in 2015 on this early extinguishment of debt was Select one: a. $60,000 gain. b. $24,000 gain. C. $20,000 loss. d. $16,000 gain