XYZ manufactures electrical switches and uses a standard cost system and carries all inventories at standard. The standard manufacturing overhead costs per switch are based on direct labor hours and are shown below: Variable overhead (5 hours @ $12 per direct manufacturing labor hour) $ 60 Fixed overhead (5 hours @ $15* per direct manufacturing labor hour) 75 Total overhead per switch $135 *Based on capacity of 200,000 direct manufacturing labor hours per month. 46,000 switches were produced although 40,000 switches were scheduled to be produced. 225,000 direct manufacturing labor hours were worked at a total cost of $5,625,000. Variable manufacturing overhead costs were $2,750,000. Fixed manufacturing overhead costs were $3,050,000. The variable manufacturing overhead efficiency variance was O $60,000 F. O $10,000 F. 0 $350,000 U. $50,000 U