Suppose you borrowed $50,000 at a rate of 8.5% and must repay it in 5 equal installments at the end of each of the next 5 years. How much would you still owe at the end of the first year, after you have made the first payment? a. $41,561.71 b. $31,171.28 c. $40,730.48 d. $41,146.10 e. $45,302.27