On January 1 of the current year, Barton Corporation issued 12% bonds with a face value of $63,000. The bonds are sold for $61,110. The bonds pay interest semiannually on June 30 and December 31 , and the maturity date is December 31,5 years from now. Barton records straight-line amortization of the bond discount. The bond interest expense for the year ended December 31 is a. $7,560 b. $1,890 C. $7,938 d. $630