Drift, Inc., uses a periodic inventory system and has the following information in regard to its inventory Beginning inventory Purchase on January 25 Purchase on March 15 Purchase on October 2 Goods available for sale 400 units @ $15 600 units @ $16 400 units @ $17 800 units @ $18 6,000 9.600 6,800 14.400 $ 36,800 There are 1,000 units in ending inventory. What is the amount of the cost of goods sold using the FIFO method