Your Corporation's flexible budget cost formula for supplies, a variable overhead cost, is $2.17 per unit of output. The company's flexible budget performance report for last month showed a $4,531 unfavorable variance for supplies. During that month, 20,000 units were produced. Budgeted activity for the month had been 16,500 units. What was the actual costs incurred for indirect materials?

Group of answer choices

a. $1.94

b. $2.17

c. $2.44

d. $1.90

e. $2.40