NEED THIS ASAP, A rental company charges $50 to rent a truck, plus $1.25 for each mile that the truck is driven.

Which equation best expresses the relationship between the cost, c, of renting the truck in terms of the number of miles, m, the truck is driven?
A. c=50.25
B. c=51.25
C. c= 1.25m+50
D. c=50m+1.25