Your father helped you start saving $20 a month beginning on your 5th birthday. He always made you deposit the money into your savings account on the first day of each month just to "start the month out right." Today completes your 17th year of saving and you now have $6,528.91 in this account. What is the rate of return on your savings?
1) 5.98 percent
2) 5.15 percent
3) 5.47 percent
4) 6.12 percent
5) 5.30 percent