Part A. R Company had the following tnventory information available. Units 100 200 300 400 Unit Cost $5 Total Cost 1/1 Beginning Inventory 1/20 Purchase 7/25 Purchase 10/20 Purchase 11/15 Sold 800 units S 500 1,200 2,100 3,200 (SHOW YOUR CALCULATIOMS) 1. Calculate the cost of goods sold inventory under the LIFO method 2. Calculate the cost of goods sold under the Average Cost method. 3. Calculate the cost of ending inventory under the FIFO method