HP has the following information for the month of December Determine the (a) cost of goods manufactured, and (b) cost of goods sold $42,100 Cost of materials placed in production 26.480 Direct labor 35,120 Factory overhead Work in process, December 1 25,000 19,000 Work in process, December 31 Finished goods inventory, December 1 67,000 Finished goods inventory, December 31 61,000