O 2 7a. A 48-month lease plan on a luxury car that costs $46,700 consists of a $2.875 down payment, monthly payments of $594.80, and a residual value of $28,400. A purchase plan for the car requires a down payment of $3,250 and a 4-year loan with monthly payments of $1,082 a. What is the total cost of leasing? $ b. What is the total cost of purchasing? c. Which plan gives the lowest total cost? d. What is the difference in the plans over four years?