On January 1 of the current year, the Barton Corporation issued 12% bonds with a face value of $88,000. The bonds are sold for $85,360. The bonds pay interest semiannually on June 30 and December 31 and the maturity date is December 31, five years from now. Barton records straight-line amortization of the bond discount. The bond interest expense for the year ended December 31 is a.$2,640 b.$11,088 c.$10,560 d.$880