LIFO/FIFO Accounting question

The inventory records of Cushing. Inc., reflected the following information for the year ended December 31, 2013: Required: a. Assume that Cushing. Inc. uses a periodic inventory system. Calculate cost of goods sold and ending inventory under FIFO and LIFO. b. Assume that Cushing. Inc., uses a perpetual inventory system Calculate cost of goods sold and ending inventory under FIFO and LIFO. c. Is there a change in cost of goods sold and ending inventory in part (a) and (b) under LIFO. Yes No d. The results from the LIFO periodic calculations in part a cannot possibly represent the actual physical flow of inventory items. True False