A conventional fixed-rate 6.5% mortgage has an original maturity of 30 years, required monthly mortgage payments of $632.07, and an initial balance of $100,000. The loan will be paid off in ___ months if the borrower pays $100 in addition to the required payment each month. If your answer includes a decimal, round up to the next month.

• A. 360
• B. 278
• C. 250
• D. 227
• E. 185