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 favorable variance for supplies. During that month, 16,500 units were produced. Budgeted activity for the month had been 20,000 units. What was the actual costs incurred for indirect materials? $2.44 $1.94 $2.40 $1.90 $2.17