Mr. Sweeney has a 12-year-old nephew, Todd, who is trying to save up for a $300 bike. Mr. Sweeney wishes to help Todd, but he also wants to teach him a lesson in hard work and the value of money. Mr. Sweeney and Todd strike the following bargain: each week, Todd will mow the lawn for Mr. Sweeney, and in return, Mr. Sweeney will deposit $25 in Todd's savings account, which pays an effective annual interest rate of 7%. How many months will it take Todd to save up enough money to buy the bike? Assume there are 4 weeks in a month. Select one: O a. 2.25 months b. 2.98 months Oc3.03 months @d. 9.01 months 11.91 months