Suppose that you have a bond that is currently trading for 1,234.56, has just paid its coupon, has a time-to-maturity of 14 years, has an annual coupon rate of 7.1%, and a face value of $1,000. This bond is unique in that the issuing firm has the right, but not obligation to call the bond in 10 years with a 14% call premium. What is this bond's yield-to-call?
a. 4.10%
b. 4.61%
c. 4.77%
d. 5.15%