Question 4 (10 points) A 20-year maturity, 10% coupon bond paying coupons semiannually is callable in 5 years at a call price of S 1,100. The bond currently sells at a yield to maturity of 8% (4% per half-year). a. What is the yield to call? b. What is the yield to call if the call price is only $1,050? c. What is the yield to call if the call price is $1,100, but the bond can be called in 2 years instead of 5 years