The debt in the table below is retired by the sinking fund method. Interest payments on the debt are made at the end of each payment interval and the payments into the sinking fund are made at the same time. Determine the following: (a) the size of the periodic interest expense of the debt; (b) the size of the periodic payment into the sinking fund; (c) the periodic cost of the debt; (d) the book value of the debt at the time indicated. Term of debt Debt Principal $19,000 11 years Payment Interval 6 months Interest Rate on Debt Interest Rate on Fund 9% 9.5% (a) The size of the periodic interest expense is $ (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.) Conversion Period semi-annually Book Value Required After 10 years