a 4-year 5.8% coupon bond is selling to yield 7%. the bond pays interest annually. one year later interest rates decrease from 7% to 6.2%. a. what is the price of the 4-year 5.8% coupon bond selling to yield 7%? b. what is the price of this bond one year later assuming the yield is unchanged at 7%? c. what is the price of this bond one year later if instead of the yield being unchanged the yield decreases to 6.2%? d. complete the following: