Question #N272

A group of friends are planning a trip. They decide to rent a car for $\$40 per day plus a $\$20 fee for insurance. If they rent the car for $d$ days, which of the following expressions represents the total cost, in dollars, of renting the car?
A. 40d + 20
B. 20d + 40
C. 60d
D. 40(d + 20)