Windrose, Inc. uses a periodic inventory system and its inventory records contain the following information: Beginning inventory: Purchased on May 10 Purchased on June 15 rohased on June 15 Purchased on August 28 Units 600 800 1,000 600 Total Cost $ 1,560 2,340 2,520 1,980 $ 8,400 3,000 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 inventory at the end of the year. If Windrose uses the LIFO costing method, what is the cost of its ending inventory