dule 7 ch Exercises Perpetual eventory Using Laro +book Beginning inventory, purchases and sales data for prepaid cell phones for December Inventory Dec. 1 Purchases Sales 1,000 units at $27 Dec. 10 Dec. 20 900 units at $2 810 units at $31 Dec 12 1.20 Dec. 14 Owc 31 1,000 units 540 un a. Assuming that the perpetual inventory system is used, costing by the LFD method, determine the cast of goods sold for each cale and the inventory balance after sach se, presenting the date the fumed Exhibit 4. Under LIFO, f units are in inventory at two different costs, enter the units with the HIGHER unit cost first in the Cost of Goods Sold Unt Custom end Lowt unt cast frat in the Inventory Unt Date Dec. 1 Dec. 10 900 Dec. 12 Dec 14 Dec 20 Dec 21 Schedule of Cost of Goods So LIFO Nethe Prepaid Cell Phones Quantity Purchased Purchases Unit Cost Purchases Total Cost Quantity Sold Cost of Goods Sold Unit Cost Cest of Goods Sold Total Cost ventory Quantity Inventary Un Cost try Dec. 33 Balances findes ck My Work 2 2100 100 29300 LIV 00 11111