A company purchases inventory during the year in 4 batches, with unit and price amounts shown below: 10.800 units were sold after Batch 2 was purchased, while 3, 400 units were sold after Batch 3 was purchased. 1. Calculate COGS and Ending Inventory under the FIFO method, using a Perpetual Inventory System. Calculate COGS and Ending Inventory under the FIFO method, using a Periodic Inventory System. Calculate COGS and Ending Inventory under the LIFO method, using a Perpetual Inventory System