Selected financial information for Shadyside Manufacturing is presented in the following table (000s omitted) Sales revenue Purchases of direct materials Direct labor $4,100 $410 $540 Manufacturing overhead $670 Operating expenses $660 Beginning raw materials inventory $290 Ending raw materials inventory $230 Beginning work in process inventory $410 Ending work in process inventory $510 Beginning finished goods inventory $350 Ending finished goods inventory $220 What was the cost of goods manufactured? OA. $1,780 OB. $1,680 OC. $1,580 OD. $1,560 cofo