Suppose the current, zero-coupon, yield curve for risk-free bonds is as follows: Maturity (years) Yield to Maturity 4.21% 4.56% 4.89% 5.28% 5.54% a. What is the price per $100 face value of a 3-year, zero-coupon risk-free bond? b. What is the price per $100 face value of a 4-year, zero-coupon, risk-free bond? c. What is the risk-free interest rate for a 5-year maturity? Note: Assume annual compounding. a. What is the price per $100 face value of a 3-year, zero-coupon risk-free bond? The price is s. (Round to the nearest cent.)