Use the following 2016 account balances for Sean Kelly company to calculate net income. Materials inventory Work-in-process inventory Finished goods inventory Materials purchased Direct labor Factory overhead Selling & admin. expenses Revenues 2016 Beginning End $ 2,000 $ 4,000 5,000 3,000 10,000 20,000 40,000 20,000 25,000 20,000 120,000 a. $30,000 b. $20,000 O c. $35,000 d. $25,000