please I need answers to both questions

On January 1, 2020, Madison Company issued $500,000 of 10-yeur, 12% bonds. The interest is payable semiannually on June 30 und December 31, The company uses the effective-interest amortization method. The market interest rate is 10%. The net book value of the bond payable at the end of December 31, 2020 is closest to: O A $558,448 OB. 5560,427 OC5562,311 OD. 5500,000 QUESTION 21 On January 1, 2021. ABC Company issued $10 million of 10-year bonds at a 10% coupon interest rate to be paid annually Calculate the issuance price if the market rate of interest was 10% O A 58,954,000 OB, 510,000,000 O 58,870,000 O D.510,854,000