1,000 units were sold after batch 2 was purchased , While 1,300 were sold after Batch 3 was purchased. A. Calculate COGS and Ending Inventory under the FIFO method, using Perpetual System COGS = Ending Inventory = B. Calculate COGS and Ending Inventory under the FIFO method, using periodic Inventory System COGS = Ending Inventory = C. Calculate COGS and Ending Inventory under the LIFO method, using Perpetual Inventory System COGS = Ending Inventory = D. Calculate COGS and Ending Inventory under the LIFO method, using periodic Inventory System COGS = Ending Inventory = E. Calculate COGS and Ending Inventory under the weighted average method, using Periodiclnventory System COGS = Ending Inventory =