Teal Mountain Inc sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Teal Mountain Inc's purchases of EZslide snowboards during September. During the same month, 102 EZslide snowboards were sold. Teal Mountain Inc. uses a periodic inventory system Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 13 $107 $ 1,391 Purchases Sept. 12 49 110 5,390 Sept. 19 Purchases 53 5.883 111 Sept. 26 20 Purchases 2,240 112 Totals 135 $14.904 (a) Compute the ending inventory at September 30 using the FIFO, LIFO and average-cost methods. (Round average cost per unit to 3 decimal places, eg. 125,153 and final answers to decimal places, eg. 125.) FIFO LIFO AVERAGE-COST $ The ending inventory at September 30 (b) Compute the cost of goods sold at September 30 using the FIFO, LIFO and average cost methods. (Round average cost per unit to 3 decimal places, eg. 125.153 and final answers to decimal places, es. 125.) AVERAGE-COST LIFO FIFO Cost of goods sold