The following data are for Billy Company: Finished goods inventory Beginning Ending $40,000 $50,000 Work-in-process inventory 20,000 13,000 Raw materials inventory 26,000 30,000 Purchases of raw materials 71,000 Factory depreciation 7,000 Other factory costs 12,500 Direct labour 30,000 Indirect labour Selling expense Over- or underapplied overhead What is the cost of goods sold? a. $81,000 b. $120,000 c. $91,000 d. $131,000 6,500 10,000 -0