Bond X has a coupon of 52 percent Bond Z has a coupon of 92 percent. Both bonds have 15 years to maturity and have a YTM of 74 percent a. If interest rates suddenly rise by 1.6 percent, what is the percentage price change of these bonds? (A negative value should be indicated by a minus sign. Do not rod inte calculations. Enter your answers as a percent rounded to 2 decimal places) b. If interest rates suddenly fall by 1.6 percent, what is the percentage price change of these bonds? (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places.) - What is your conclusion?