Use the following present value factors (when necessary) to solve the following case: On January 1, 2015, Weaver Co. sold 12\% bonds with a face value of $600,000. The bonds mature in five years, and interest is paid semiannually on June 30 and December 31 . The bonds were sold for $6462200 to yicld 10%. Using the effective-interest method of umortization, what is total interest expense for the year 2015 ? a. $64,346 b. $32,126 c. $32,310 d. $64.436