Inventory Costing: LIFO Filimonov Inc. has the following information related to purchases and sales of ane of its inventorv items: Refer to the information for Flitmonov Inc. and assume that the company uses a perpetual inventory system. This information has been collected in the Microsoft Excel Onitine file. Open the spreadsheet, perform the required analysis, and input your answers in the question. below. Open spreadsheet Required: Calculate the cost of goods sold and the cost of ending inventory using the UFO imventory costing method