a. Find the duration of a 9% coupon bond making annual coupon payments if it has three years until maturity and has a yield to maturity of 9%. Note: The face value of the bond is $1,000. (Do not round intermediate calculations. Round your answers to 3 decimal places.) 9% YTM years b. what is the duration if the yield to maturity is 11.4%? Note: The face value of the bond is $1,000. (Do not round intermediate calculations. Round your answers to 3 decimal places.) years 10% YTM