$430 $190 $280 raw materials inventory raw materials inventory Beginning Ending Direct labor $750 $520 Operating expenses Purchases of direct materials $330 $680 $5,000 Beginning work in process inventory Ending work in prmcess inventory Sales revenue Manufacturing overhea Beginning finished goods inventory Ending finished goods inventory $760 $310 $260 What was the cost of direct materials used? O A. $520 O B. $240 O C. $760 D. $950