Donna's Boards sells a snowboard, Xpert, that is popular with snowboard enthusiasts. Information relating to Donna's purchases of Xpert snowboards during September is shown below. During the same month, 123 Xpert snowboards were sold. Donna's uses a periodic inventory system. (a) Compute the ending inventory at September 30 and cost of goods sold using the FIFO and LIFO methods. eTextbook and Media Attempts: 0 of 1 used (b) The parts of this question must be completed in order. This part will be available when you complete the part above