Company X's bonds currently sell for $1233 and have a par value of $1,000. They pay a $110 annual coupon and have a 15-year maturity, but they can be called in 5 years at $1,250. What is their yield to call (YTC)? a. 6.50% b. 7.77% c. 8.24% d. 9.15% e. 7.41%