(Ch5.1) WasteKing uses a fleet of trucks in its business, and wants to know how distance affects these costs. Its Miles driven and Operating costs during the recent 5 months were as follow: in January 18,300 miles driven with the total operating cost of $11,200; in February 16,500 miles with $10,700; in March 14,500 miles with $9,600; in April 11,500 miles with $7,020; and in May 10,300 miles driven with $7,200 of operating cost. Using the high-low method, what is the variable cost per mile?

Select one:

a. $0.50 rounded.

b. All listed choices are incorrect.

c. $0.61 rounded.

d. $0.5225 rounded.