Priority Company, which applies overhead to production on the basis of machine hours, reported the following data for the period just ended: Actual units produced: 13,000 Actual variable overhead incurred: $58.200 Actual machine hours worked: 15,000 Standard variable overhead cost per machine hour. $3.90 If Priority estimates 1.20 hours to manufacture a completed unit, the company's variable-overhead efficiency variance is: Multiple Choice $300 favorable $300 unfavorable $2.340 favorable $2.340 unfavorable None of the answers is correct