Perpetual Inventory Using I.1rg Beginning inventocy, murchases, and sales data for perpalid cell obones fo a. Assuming that the perpetual inventory system is used, costing by the LIFO method, determine the cost of goods said for each sale and the inventory bula each sale, presenting the data in the form illustrated in Exhibit 4. Under LFO, if units are in inventory at two different costs, enter the units with the HIGHER first in the Cost of Goods Sold Unit Cost column and LowER unit cost first in the inveotory Unit Cost column