Both bond A and bond B have 9 percent coupons and are priced at par value. Bond A has 5 years to maturity, while bond B has 20 years to maturity.
a. If interest rates suddenly rise by 1.6 percent, what is the percentage change in price of bond A and bond B?
b. If interest rates suddenly fall by 1.6 percent instead, what would be the percentage change in price of bond A and bond B?