The company had the following information for the month of January. Cost of direct materials used in production $16,800 Direct labor $43,400 Factory overhead $28,000 Work in process inventory, January 1 $70,000 Work in process inventory, January 31 $74,200 Finished goods inventory, January 1 $29,400 Finished goods inventory, January 31 $33,600 For the month of January, determine (a) the costs of goods manufactured and (b) the cost of goods sold