Bond Joe has a coupon rate of 6 percent and Bond Kat has a coupon rate of 12 percent. Both bonds have 20 years to maturity, and have a YTM of 9 percent. Both bonds make semiannual payments. a. What is the percentage price change of these bonds, if interest rates suddenly rise by 2 percent? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) b. What if rates suddenly fall by 2 percent instead? (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) a. Bond J Bond K Bond J Bond K % % % % b