a. What is the duration of a two-year bond that pays an annual coupon of 12 percent and has a current yleid fo maturity of 14 percent? Use $1,000 as the face value. (Do not round intermediate calculations. Round your answer to 4 decimal ploces. (e.g., 32.1616)) b. What is the duration of a two-year zero-coupon bond that is yielding 11.5 percent? Use $1,000 as the face value