Betty's Boards sells a snowboard, Xpert, that is popular with snowboard enthusiasts. Information relating to Betty's purchases of Xpert snowboards during September is shown below. During the same month, 121 Xpert snowboards were sold. Betty's uses a periodic inventory system. Date Explanation Units Unit Cost Total Cost 26 $96 Inventory Purchases 45 104 Sept. 1 Sept. 12 Sept. 19 Sept. 26 $ 2,496 4,680 2,120 5,350 Purchases 20 106 Purchases 50 107 Totals 141 $14,646 (a) Compute the ending inventory at September 30 and cost of goods sold using the FIFO and LIFO methods. FIFO LIFO The ending inventory at September 30 $ $ Cost of goods sold $ $ Click if you would like to Show Work for this question: Open Show Work LINK TO TEXT