21. In calculating the current price of a bond paying semiannual coupons, one needs to: a. Use half the number of years for the number of payments made b. Use double the number of years for the number of payments made c. Use the semiannual coupon d. Use the semiannual rate as the discount rate (interest rate) e. B,C,and D 22. Which one of the following statements about zero coupon bonds is NOT true? Zero coupon bonds have no coupon pymts but promise a single payment at maturity Zero coupon bonds must sell for less than similar bonds that make periodic coupon pymts a. b. c. Zero coupon bonds make coupon payments but no principal payment at maturity d. All of the above