Both bond A and bond B have 9.2 percent coupons and are priced at par value. Bond A has 6 years to maturity, while bond B has 20 years to maturity.

a. If interest rates suddenly rise by 1.8 percent, what is the percentage change in price of bond A and bond B? (Negative answers should be indicated by a minus sign. Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places. Omit the "%" sign in your response.) Bond A % Bond B %

b. If interest rates suddenly fall by 1.8 percent instead, what would be the percentage change in price of bond A and bond B?