Weighted Average Cost Flow Method Under Perpetual Inventory System The following units of a particular item were available for sale during the calendar year Jan 1 4,000 units at $40 Inventory Apr. 19 June 301 Sale 2,500 units Sept. 2 Nov. 15 Purchase Sale 4,500 units at $44 Purchase 5000 units 2,000 units at $45 The firm uses the weighted average cost method with a perpetual inventory system. Determine the cost of goods sold for each sale and the inventory balance after each sale. Present the data in the formatted in Exhibit S Date Quantity Purchases Unit Cost Schedule of Cost of Goods Sold Weighted Average Cast Flow Method Cost of Goods Sold Inventory Total Cost Quantity Unit Cost Total Cost Quantity Unit Cost Total Cast Jan. 1 Ape 19 June 30 Sept. 2 Nov. 15 Dec 31 Balances Accounting numeric field