Henry bought a 4% semi-annual coupon bond with 25 years to maturity at par value of $1,000. If the required rate of return (annual yield to maturity) of this bond decreases from 5% to 4.25%, by how much does the value of the bond change? o increases by 84.3 decreases by 84.3 decreases by 103.5 o increases by 103.5