Current Attempt in Progress REI sells snowboards. Assume the following information relates to REI's purchases of snowboards during September, During the same month, 107 snowboards were sold. REl uses a periodic inventory system. (a) Compute the ending inventory at September 30 using FIFO, LIFO, and average-cost. (Round averase cost per unit to 3 decimal places, es. 125.153 and final answers to 0 decimal places, es. 125.) Compute the cost of goods sold for the month using the FIFO. UFO, and average-cont methods. (Round overar cost per unit to 3 decimal places, ex. 125.153 and final answers to 0 decimal places, e.e. 125