9. A twenty-year annuity is purchased at a 3% annual effective interest rate. The first payment of the annuity is due in five years in the amount of 2000. The subsequent payments decrease by 100 each year. What is the price of the annuity at the time of purchase? (Round your answer to the nearest integer.) (a) 14,729 (b) 17,075 (c) 15,890 (d) 15,171 (e) 16,650