At the beginning of 2010, Winston Corporation issued 10% bonds with a face value of $600,000. These bonds mature in five years, and interest is paid semiannually on June 30 and December 31. The bonds were sold for 555,840 to yield 12%. Winston uses a calendar-year reporting period. Using the effective-interest method of amortization, what amount of interest expense should be reported for 2010? (Round your answer to the nearest dollar.) a. $66,500 b. $66,700 c. $66,901 d. $68,832