Blue Spruce's Boards sells a snowboard, Xpert, that is popular with snowboard enthusiasts. Information relating to Blue Spruce's purchases of Xpert snowboards during September is shown below. During the same month, 248 Xpert snowboards were sold. Blue Spruce's uses a periodic inventory system. Date Sept. 1 Sept. 12 Sept. 19 Sept. 26 Explanation Units Unit Cost Total Cost 5,194 9,660 4,469 11,433 $30,756 Inventory Purchases Purchases 53 92 41 103 289 $98 105 109 Purchases- Totals 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