Gilder Corporation makes a product with the following standard costs: Standard Quantity or Hours Standard Price or Rate Standard Cost Per Unit Direct materials 7.6 grams $6.00 per gram $45.60 Direct labor 0.1 hours $16.00 per hour $1.60 Variable overhead 0.1 hours $6.00 per hour $0.60 The company reported the following results concerning this product in June. Originally budgeted output 5,400 units Actual output 5,500 units Raw materials used in production 39,200 grams Purchases of raw materials 44,100 grams Actual direct labor-hours 510 hours Actual cost of raw materials purchases $260,190 Actual direct labor cost $7,803 Actual variable overhead cost $2,754 The company applies variable overhead on the basis of direct labor-hours. The direct materials purchases variance is computed when the materials are purchased. The labor efficiency variance for June is: $612 F $612 U $640 F $640 U