What was the amount of direct materials used during November if $20,000 in raw materials were purchased during the month and if the inventories were as follows? Raw materials Work in process Finished goods Balance November 1 $ 4,000 12,000 24,000 Balance November 30 $ 3,000 15,000 27,000 Select one: O a. $19,000. O b. $21,000. 7 O c. $15,000 O d. $18,000