Suppose a coupon bond with a par value of $1,000 pays a semiannual coupon payment of $20. (This is fair-priced at issue at an annual rate of 4%.) (a) Now, suppose the annual interest rate has risen to 6% (3% semiannually). What is the fair market price of this bond if the remaining time to maturity is 2 years? What is the fair market price of a zero-coupon bond with everything else being the same as the previous question? (b) Now, suppose the annual interest rate has dropped to 3%. What is the fair market price of this bond if the remaining time to maturity is 2 years? What is the fair market price of a zero-coupon bond with everything else being the same as the previous question?