Current Attempt in Progress REI sells snowboards. Assume the following information relates to REI's purchases of snowboards during September. During the same month, 103 snowboards were sold. REl uses a periodic inventory system. (a) Compute the ending inventory at September 30 using FIFO, LFO, and average-cost, (Round average cost per unit to 3 decimal places, es. 125.153 and final answers to Odecimal places es. 125) Attempts: 0 of 5 used (b) The parts of this question must be completed in order. This part will be available when you complete the part above