Print Item Perpetual inventory using FIFO Beginning inventory, purchases, and sales data for prepaid cell phones for December are as follows: Inventory Dec. 1 320 units at $31 Purchases Dec. 10 160 units at $33 20 144 units at $35 Sales Dec. 12 224 units 14 192 units 31 96 units Assume that the business maintains a perpetual inventory system, costing by the first-in, first-out 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 3. Under FIFO, if units are in inventory at two different costs, enter the units with the LOWER unit cost first in the Cost of Goods Sold Unit Cost column and in the Inventory Unit Cost column. FIFO Method Prepaid Cell Phones Cost of Cost of Cost of Purchases Purchases Purchases Goods Sold Goods Sold Goods Sold Inventory Inventory Inventory Date Quantity Unit Cost Total Cost Quantity Unit Cost Total Cost Quantity Unit Cost Total Cost Dec. 1 Dec. 10