ost and E6-4 Elsa's Boards sells a snowboard, Xpert, that is popular with snowboard enthusiasts. Information relating to Elsa's purchases of Xpert snowboards during September is shown below. During the same month, 121 Xpert snowboards were sold. Elsa's uses a periodic inventory system. Explanation Date Units Unit Cost Total Cost Sept. 1 Inventory 26 $ 97 $ 2,522 Sept. 12 Purchases 45 102 4,590 Sept. 19 Purchases 20 104 2,080 Sept. 26 Purchases 50 105 5,250 Totals 141 $14,442 Instructions Compute the ending inventory at September 30 and cost of goods sold using the FIFO Prove the amount allocated to cost of goods sold under each method.