Assume the following: The standard price per pound is $2.15. The standard quantity of pounds allowed per unit of finished goods is 4 pounds. The actual quantity of materials purchased and used in production is 50,100 pounds. The actual purchase price per pound of materials was $2.25. The company actually produced 13,000 units of finished goods during the period; however, its planning budget was based on 12,800 units. What is the materials quantity variance?