Gaga Fashions uses a periodic inventory system. The beginning inventory of a particular product, and the purchases during the current year, were as follows ...400 units@$7.00 Beginning inv Purchase 800 7,500 11,200 an Feb 1 1,000 units $7.50- 1200 units @ $8.25- 4,000 units Nov 25 Purchase Total available for sale in year At December 31, the ending inventory of this product consisted of 1,300 units Determine the cost of the year-end inventory and the cost of goods sold for this product under each of the following methods of inventory valuation: Inventory at Dec. 31 Cost of Goods Sold (a)Average cost (b)First-in, first-out $ (c) Last in, first-out$