Perpetual inventory using FIFO Beginning irventory, purchases, and sales data for prepaid cell phones for December are as follows: Inventory Dec. 1120 urits at $33 Assume that the business maintains a perpetual inventory svatem, costing by the frum in, fust-out method. Determine the cost of goofs sold for each sale and the inventory balance Cost of Goods Sold Unit Cost column and in the Inventory Unst Cost oolumn Assume that the business maintains a perpetual inventary system, costing by the first in, first out method. Determine the cost of goods sold for each sale and the inventory balance Cost of Goods Sold Unit Cost column and in the Inventory Unit Cost column