A 30 year maturity, 8% coupon bond paying coupons semiannually is callable in five years at a price of $1100. The bond currently sells at a yield to maturity of 7% (3.5% per half year)
a. What is the yield to call?
b. What is the yield to call of the call price is $1100 but the bond can be called in two years instead of 5?