An olive oil processor incurred the following plant maintenance costs: 59,000 units processed with maintenance costs of $78,000, and 42,000 units processed with maintenance costs of $66,000. What is the variable cost per unit processed? (Round to the nearest cent.)

Select one:

a. $1.12

b. $1.57

c. $1.86

d. $1.32

e. $0.71