Kingbird, Inc. sells a snowboard, EZ slide, that a popular with snowboard enthusiasts. Below is information relating to Kingbird, Inc.'s purchases of EZ slide snowboards during September. During the same month, 92 EZ slide snowboards were sold, Kingbird, Inc. uses a periodic inventory system. (a) Compute the ending inventory at September 30 using the FIFO, UFO and average cost methods. (b) Compute the cost of goods sold at September 30 using the FIFO, LIFO and average cost methods