Dirickson Inc. has provided the following data concerning one of the products in its standard cost system. Variable manufacturing overhead is applied to products on the basis of direct labor-hours. Inputs Standard Quantity or Hours per Unit of Output Standard Price or Rate Direct materials 7.6 ounces $ 9.40 per ounce Direct labor 0.10 hours $ 18.00 per hour Variable manufacturing overhead 0.10 hours $ 5.30 per hour The company has reported the following actual results for the product for July: Actual output 7,600 units Raw materials purchased 63,000 ounces Actual cost of raw materials purchased $ 541,800 Raw materials used in production 57,750 ounces Actual direct labor-hours 820 hours Actual direct labor cost $ 16,072 Actual variable overhead cost $ 4,592 The variable overhead efficiency variance for the month is closest to: Multiple Choice $336 F $318 F $336 U $318 U