Linda's Boards sells a snowboard, Xpert, that is popular with snowboard enthusiasts. Information relating to Linda's purchases of Xpert snowboards during September is shown below. During the same month, 121 Xpert snowboards were sold. Linda's uses a periodic inventory system Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 26 $95 $ 2.47p Sept. 12 Purchases 45 105 4,725 Sept. 19 Purchases 20 107 2.140 Sept. 26 Purchases 50 108 5.400 Totals $14,735 (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