A 25-year maturity, 6% coupon bond paying coupons semi-annually is callable in five years at a call price of $1,200. The bond currently sells at a yield to maturity of 5%. Part A. What is the yield to call? Part B. What is the yield to call if the call price is only $1,100? Part C. What is the yield to call if the call price is $1,050 but the bond can be called in ten years instead of five years?