Pina Colada Corp, uses a periodic inventory system. Its records show the following for the month of May, in which 79 units were sold, Date Explanation Units Unit Cost Total Cost May 1 30 $9 $270 Inventory Purchase 15 25 10 250 24 Purchase 45 11 495 Total 100 $1,015 (b) * Your answer is incorrect Calculate the ending inventory at May 31 using the FIFO, LIFO and average-cost methods. (Round answers to 0 decimal places, e.g. 125.) FIFO LIFO AVERAGE-COST The ending inventory at May 31 209 $ 171 $ 192