Windsor sells a snowboard, WhiteOut, that is popular with snowboard enthusiasts. Presented below is information relating to Windsor's purchases of WhiteOut snowboards during September. During the same month, 122 WhiteOut snowboards were sold at $163 each. Windsor uses a periodic inventory system. (a) Compute the ending inventory at September 30 and cost of goods sold using the FIFO and LIFO methods. For both FIFO and LIFO, calculate the sum of ending inventory and cost of goods sold. What do you notice about the answers you found for each method