Please show all work

Both bond A and bond B have 9.4 percent coupons and are priced at par value. Bond A has 7 years to maturity, while bond B has 20 years to maturity. a. If interest rates suddenly rise by 2 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 2 percent instead, what would be the percentage change in price of bond A and bond B? (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 %