Which of the following options is a better purchase for a microwave? option 1: a cash sale for $120 option 2: $5 down with equal payments of $10 for 15 weeks option 3: $10 down with equal payments of $5 for 24 months option 4: $0 down with equal payments of $15 for 9 months a. option 4 b. option 3 c. option 2 d. option 1