REI sells snowboards. Assume the following information relates to REI's purchases of snowboards during September. During the sar month, 108 snowboards were sold. REI uses a periodic inventory system. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 11 $116 $1,276 Sept. 12 Purchases 48 119 5,712 Sept. 19 Purchases 60 120 7,200 Sept. 26 Purchases 21 121 2,541 Totals 140 $16.729 (a) Your answer is correct. Compute the ending inventory at September 30 using FIFO, LIFO, and average-cost. (Round average cost per unit to 3 decimal ploces, eg. 125.153 and final answers to O decimal places, eg 125) (b) Ending inventory at September 30 eTextbook and Media FIFO LIFO 3861 $ 3.775 AVERAGE-COST 3.824 Attempts: 1 of 5 used Compute the cost of goods sold for the month using the FIFO, LIFO, and average-cost methods. (Round average cost per unit to 3 decimal places, es 125.153 and final answers to O decimal places, es 125) FIFO Cost of goods sold $ LIFO AVERAGE-COST