Reagen Corporation makes a product with the following standard costs: Direct materials Direct labor Variable overhead Standard Quantity or Hours 3.7 liters 0.3 hours 0.3 hours Standard Price or Rate $5.00 per liter $21.00 per hour $7.00 per hour The company reported the following results concerning this product in December. 7,700 Actual output Raw materials used in production Actual direct labor-hours Purchases of raw materials Actual price of raw materials Actual direct labor rate Actual variable overhead rate 26,880 2,270 28,400 $4.90 $21.50 $6.40 units liters hours liters per liter per hour per hour 7700 x The materials price variance is recognized when materials are purchased. Variable overhead is applied on the basis of direct labor-hours. Required: a. Compute the materials quantity variance. b. Compute the materials price variance. c. Compute the labor efficiency variance. d. Compute the labor rate variance. e. Compute the variable overhead efficiency variance. f. Compute the variable overhead rate variance