2-38. Basic Concepts The following data refers to one month. Fill in the blanks. A 1 Direct materials inventory, March 1 2 Direct materials inventory, March 31 3 Work-in-process inventory, March 1 4 Work-in-process inventory, March 31 5 Finished goods inventory, March 1 6 Finished goods inventory, March 31 7 Purchases of direct materials 8 Cost of goods manufactured during the month 9 Total manufacturing costs 10 Cost of goods sold 11 Gross margin 12 Direct labor 13 Direct materials used 14 Manufacturing overhead 15 Sales revenue 16 a. b. C. d. B $ 16,000 13,500 5,000 32,000 35,500 130,000 127,000 85,000 60,000 31,000 240,000