Tracy Industries uses a periodic inventory system and its inventory records contain the following information: Units Total Cost 600 $ 1,560 Beginning inventory: Purchased on May 10 800 Purchased on June 15 2,340 1,000 2,520 Purchased on August 28 600 3,000 1,980 $ 8,400 The company sold 2,000 units during June. There were no additional purchases or sales during the remainder of the year. The company had 1,000 units were in its ending inventor at the end of the year. If Tracy uses the FIFO costing method, what is the cost of its ending inventory