eBookShow Me How Question Content Area Perpetual inventory using LIFO Beginning inventory, purchases, and sales data for prepaid cell phones for December are as follows: Inventory Date Units and Cost Dec. 1 3,500 units at $30 Purchases Date Units and Cost Dec. 10 1,750 units at $32 20 1,575 units at $34 Sales Date Units Dec. 12 2,450 units 14 2,100 units 31 1,050 units Question Content Area a. Assuming that the perpetual inventory system is used, costing by the LIFO method, determine the cost of goods sold for each sale and the inventory balance after each sale, presenting the data in the form illustrated in Exhibit 4. Under LIFO, if units are in inventory at two different costs, enter the units with the