On Aug. 22, 2017 Amazon.com issued a semiannual bond with coupon rate of 3.15% and maturity date of Aug. 22, 2027. The bond pays coupon on Feb. 22 and Aug. 22 every year. The current bond YTM is 0.96%. You bought the bond on Aug. 22, 2020. In September 2020, market rates decreased by 0.25%

a. You plan to sell the bond in 4 years. Please find out your semi-annual holding period return (assume you compound semi-annually). (6 points)

b. Is your semi-annual holding period return higher, lower or the same as the original semi-annual YTM? Please explain. (3 points)