Doogan Corporation makes a product with the following standard costs: Direct materials Direct labor Variable overhead Standard Quantity or Hours Standard Price or Rate: 7.5 grams 0.5 hours $ 0.50 per gram $ 2.10 per hour 21.0 hours $ 7.10 per hour The company produced 5,300 units in January using 39,410 grams of direct material and 2,390 direct labor-hours. During the month, the company purchased 44,500 grams of the direct material at $1.80 per gram. The actual direct labor rate was $20.30 per hour and the actual variable overhead rate was $6.90 per hour. 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 variable overhead rate variance for January is: