15. A loan of $ 200,000 is repaid using the sinking fund method with payments at the end of each month for 30 years. The nominal annual rate of interest convertible monthly is 6%. If the service payment is set at $899.10/month, what is the required sinking fund payment given that the sinking fund earns interest at an effective rate of 7% per month? A. $ 200.00 B. $ 300.00 C. $ 899.10 D. $ 999.10 E. $ 1,000.00 15. A loan of $ 200,000 is repaid using the sinking fund method with payments at the end of each month for 30 years. The nominal annual rate of interest convertible monthly is 6%. If the service payment is set at $899.10/month, what is the required sinking fund payment given that the sinking fund earns interest at an effective rate of 7% per month? A. $ 200.00 B. $ 300.00 C. $ 899.10 D. $ 999.10 E. $ 1,000.00