Beginning raw materials inventory $410 Ending raw materials inventory $270 Direct labor $330 Operating expenses $740 Purchases of direct materials $550 Beginning work in process inventory $400 Ending work in process inventory $700 Sales revenue $4,600 Manufacturing overhead $800 Beginning finished goods inventory $310 Ending finished goods inventory $250 What was cost of goods sold? OA. $1,580 OB. $1,460 OC. $800 OD. $1,200