Guys Ltd sells backpacks. At the beginning of March, Guys Ltd had in beginning inventory 145 backpacks with a unit cost of $32. During March Guys Ltd made the following purchases of backpacks. During March, 1,350 units were sold. Guys Ltd uses a periodic inventory system. Required a. Determine the cost of goods available for sale. (1 mark) b. Determine (1) the ending inventory and (2) the cost of sales assuming the First-In, First-Out (FIFO) cost flow method is used. (3 marks) c. Determine (1) the ending inventory and (2) the cost of sales assuming the Last-In, First-Out (LLFO) cost flow method is used. (3 marks) d. Suppose you were to use the LIFO cost flow method. Would you expect the LIFO cost flow method to result in higher or lower inventory costs? Would you expect cost of sales to be higher or lower? Do your conclusions generalise for all possible cases? Explain