Marvel Parts, Incorporated, manufactures auto accessories. One of the company's products is a set of seat covers that can be adjust to fit nearly any small car. The company has a standard cost system in use for all of its products. According to the standards that have been set for the seat covers, the factory should work 1,005 hours each month to produce 2,010 sets of covers. The standard costs associated with this level of production are: Total Per Set of Covers Direct materials $ 28,542 $ 14.20 Direct labor $ 8,640 4.60 Variable manufacturing overhead (based on direct laborhours) $ 3,618 1.89 $ 20.00 During August, the factory worked only 1200 direct labor-hours and produced 2600 sets of covers. The following actual costs were recorded during the month: Total Per Set of Covers Direct materials (6,666 yards) $ 35,160 $ 13.50 Direct labor $ 16,920 4.20 Variable manufacturing overhead $ 5,460 2.10 $ 19.80 At standard, each set of covers should require 2.0 yards of material. All of the materials purchased during the month were used in production. 1. Materials price variance 1. Materials quantity variance 2. Labor rate variance 2. Labor efficiency variance 3. Variable overhead rate variance 3. Variable overhead efficiency variance