I need to know the ending inventory and COGS using FIFO and LIFO

Flying Tomato sells a snowboard, WhiteOut, that is popular with snowboard enthusiasts. Presented below is information relating to Flying Tomato's purchases of WhiteOut snowboards during September. During the same month, 121 WhiteOut snowboards were sold at $170 each. Flying Tomato uses a periodic inventory system. (a) Your answer is incorrect. Compute the ending inventory at September 30 and cost of goods sold using the FIFO and LIFO methods