REI sells snowboards. Assume the following information relates to REI's purchases of snowboards during September. During the same month, 104 snowboards were sold. REI uses a periodic inventory system. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 14 $110 $1,540 Sept. 12 Purchases 45 113 5,085 Sept. 19 Purchases 57 114 6,498 Sept. 26 Purchases 24 115 2,760 Totals 140 $15,883 (a) Compute the ending inventory at September 30 using FIFO, LIFO, and average-cost. (Round average cost per unit to 3 decimal places, e.g. 125.153 and final answers to O decimal places, e.g. 125.) Ending inventory at September 30 FIFO $ LIFO AVERAGE-COST