bond j has a coupon rate of 5 percent and bond k has a coupon rate of 11 percent. both bonds have 13 years to maturity, make semiannual payments, and have a ytm of 8 percent. a. if interest rates suddenly rise by 2 percent, what is the percentage price change of these bonds? (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.)