A bond was issued a long time ago and it currently has four years left in the bond's life. The coupon rate is 7\% (annual payment) and the interest rate is 8.5% per year. a. What is the bond's price? b. In another year, after the next coupon is paid and the remaining maturity falls to three years, how much would the bond be sold at (assuming the interest rate stays at 8.5% per year)? What is the HPR during this year? c. Redo Part b, but this time assume that the prevailing interest rate is 9.5% after another year. How much would the bond be sold at? What is the HPR during this year? Discuss the difference in HPR between Part b and c