You have just finished the university and need money to buy a new home. Your sister will lend you the money so long as you agree to pay her back within four years, and you offer to pay her the rate of interest that she would otherwise get by putting her money in a savings account. Based on your earnings and living expenses, you think you will be able to pay her $5000 in one year, and then $8000 each year for the next three years. If your sister would otherwise earn 6% per year on her savings, how much can you borrow from her? Select one: a. $25000 b. $31,423.87 c. $24,890.65 d. $24,000