Windsor sells a snowboard, E7slide, that is popular with snowboard enthusiasts. Below is information relating to Windsor's purchases of Ezslide snowboards during September. During the same month, 105 EZslide snowboards were sold. Windsor uses a periodic inventory system. Compute the ending inventory at September 30 using the FIFO, LFFO and average-cost methods. Compute the ending inventory at September 30 using the FFF, LIFO and average-cost methods. Compute the cost of goods sold at September 30 using the FIFO, LIFO and average-cost methods