I know the answer is (a) but not sure how to get to that result. Thank you :)

88. In order to accurately assess the capital structure of a firm, it is necessary to convert its balance sheet figures from historical book values to market values. KJM Corporation's balance sheet (book values) as of today is as follows: The bonds have a 8.3% coupon rate, payable semiannually, and a par value of $1,000. They mature exactly 10 years from today. The yield to maturity is 11%, so the bonds now sell below par. What is the current market value of the firm's debt? a. $19,708,741 b. $22,073,790 c. $24,241,752 d. $21,679,615 e. $15,569,906