Perpetual Ifventory Using FIFo The following units of a particular item were mvailable for sale during the calender year: The firm meintains a perpetual inventory system. Determine the cost of goods soid for eoch sale and the inventory balance after each saie, assuming the first lin, first-out method. Present the data in the form likstrated in Exhbit 3. Under FiFo, if units are in invertery at two different costs, enter the units with the LOWER unit cost first in the Cost of Goods 5 old Unit Cost column and in the Irventory Unit Cost columni