Sales revenue Purchases of direct materials Direct labor Manufacturing overhead Operating expenses Beginning raw materials inventory Ending raw materials inventory Beginning work in process inventory Ending work in process inventory Beginning finished goods inventory Ending finished goods inventory $4,300 $500 $460 $710 $690 $220 $200 $390 $420 $280 $250 Selected financial information for Brookeville Manufacturing is presented in the following table (000s omitted). Click the icon to view the data.) What was the cost of direct materials used? O A. $520 OB. $420 O C. $500 OD. $720