Ferpetual Inventory Using uro Detpetual niventocy system, costing by the last-in, first-out method. Determine the cost of goods sold for each sale and the imventory balance after each sale, presenting the data in the form illustrated in bxhibit 4 , Under tifo, if units are in inventony with the HIGHER unit cost first in the Cost of Goods Sold Unit Cost column and LOWER unit cost first in the Inventory Unit Cost caluman