18. Interest Rate Risk (LO3, CFA4) Bond J is a 4 percent coupon bond. Bond K is an 8 percent coupon bond. Both bonds have 10 years to maturity and have a YTM of 7 percent. If interest rates suddenly rise by 2 percent, what is the percentage price change of these bonds? What if rates suddenly fall by 2 percent instead? What does this problem tell you about the interest rate risk of lower-coupon bonds?