31. A bond is currently trading at $980. The bond will mature exactly 8 years and has a face value of $1,000. The bond pays an annual coupon of 4.00% APR. Based on this information, which answer shows how to solve for the yield to maturity? a. $980=y$40x(1(1+y1)8)+$1,000x(1+y)8 (b.) $980=y$40x(1(1+y1)8)+(1+y)8$1,000 c. $980=y$20x(1(1+y1)16)+(1+y)16$1,000 d. $1,000=y$40x(1(1+y1)8)+$980x(1+y)8