13) Dooley Company has the following information available for variable overhead costs. Direct labor hours are the cost driver for variable overhead costs, Actual variable overhead costs Standard variable overhead costs Actual direct labor hours Standard direct labor hours per unit Units produced $4,700 $1.20 per hour 3,750 hours 5 hours 700 What is the variable overhead efficiency variance? A) $500 Favorable C) $300 Unfavorable B) $300 Favorable D) $500 Unfavorable