Assume that you pay $815.36 for a long-term bond that carries a coupon of 7.7%. Over the course of the next 12 months, interest rates drop sharply. As a result, you sell the bond at a price of $958.17. a. Find the current yield that existed on this bond at the beginning of the year. What was it by the end of the one-year holding period? b. Determine the holding period return on this investment. (Hint: See Chapter 4 for the HPR formula.) a. The current yield that existed on this bond at the beginning of the year is \%. (Round to two decimal places.)