C. (3 points) On January 1, 2018, Piper Co. issued ten-year bonds with a face value of $5,000,000 and a stated interest rate of 10%, payable semiannually on June 30 and December 31. The bonds were sold to yield 12%. Calculate the issue price of the bond. D. (3 points) Pronghorn Corporation purchases a patent from Crane Company on January 1, 2017, for $50,000. The patent has a remaining legal life of 15 years. Pronghorn feels the patent will be useful for 10 years. Prepare Pronghorn's journal entries to record the purchase of the patent and 2017 amortization. Accounts DR CR Purchase Amort