CMS Corporation's balance sheet as of today is as follows: Long-term debt (bonds, at par) $10,000,000 Preferred stock 2,000,000 Common stock ($10 par) 10,000,000 Retained earnings 4,000,000 Total debt and equity $26,000,000 The bonds have a 4.0% coupon rate, payable semiannually, and a par value of $1,000. They mature exactly 10 years from today. The yield to maturity is 12%, so the bonds now sell below par. What is the current market value of the firm's debt? a. $5,276,731 b. $5,412,032 c. $5,547,332 d. $7,706,000 e. $7,898,650

Please show me step by step so I can understand how to find firms debt value.