Pablo was reviewing the water bill for his carwash business and determined that the highest bill, $5,300, Occurred in July when 2,500 cars were washed and the lowest bill, $3,400, occurred in February when 1.600 cars were washed. What was the variable cost per carwash? O A. $2.11 OB. $1.36 OC. $2.12 OD. $2.13