A company just issued a 20-year bond that has a face value of $1,000 and a coupon rate of 8.5%. Similar bonds are priced at 92.5% of par (or face) value. Given this information, what is the yield to maturity on this bond? (assume the bond pays semiannual coupons)
a) 9.28%
b) 9.42%
c) 9.55%
d) 9.68%