Begifring itwentory, purchases, and sales data fot portable gante players are as follows: The bunitess maintains a perpetual invernoty system, costing by the last in, first-out method teimine the cost of merchandise sold for each sale and the inventory balance after each sale, presenting the data in the form illustrated in Exhabit 4. Under UI entory at two different costs, enter the units with the HIGHER unit cost first in the Cost of Merchandise Sold Unit Cost column and LOWER unit cost first in the st column