You need a new car and the dealer has offered you a price of $ 20 comma 000$20,000​, with the following payment​ options: (a) pay cash and receive a $2,000 ​rebate, or​ (b) pay a $ $5,000 down payment and finance the rest with a 0% APR loan over 30 months. But having just quit your job and started an MBA​ program, you are in debt and you expect to be in debt for at least the next 2​ ½ years. You plan to use credit cards to pay your​ expenses; luckily you have one with a low​ (fixed) rate of 14.35% APR.
A)Your monthly discount rate is (Round to four decimal​places.)
B)Which payment option is best for​ you?