Tharaldson Corporation makes a product with the following standard costs. Direct materials Direct labor variable overhead Standard Quantity or Hours 7.4 ounces 0.3 hours 0.3 hours Standard Price or Rate $ 2.ee per ounce $ 18.00 per hour $7.ee per hour Standard Cost Per Unit $14.80 $5.40 $ 2.10 The company reported the following results concerning this product in June Originally budgeted output Actual output Raw materials used in production Purchases of raw materials Actual direct labor-hours Actual cost of raw materials purchases Actual direct labor cost Actual variable overhead cost 2,800 units 2,900 units 19, eee ounces 21,700 ounces 490 hours $ 42,200 $ 12,800 $3,400 The company applies variable overhead on the basis of direct labor-hours. The direct materials purchases variance it computed when the materials are purchased The labor officiency variance for June Is Multiple Choice $6.040F $6,8400 O $6.300 F 0 36.500