The Shirt Shop had the following transactions for T-shirts for Year 1, its first year of operations: Jan. 20 Purchased 330 units @ $ 10 = $ 3,300 Apr. 21 Purchased 80 units @ $ 11 = 880 July 25 Purchased 210 units @ $ 13 = 2,730 Sept. 19 Purchased 60 units @ $ 14 = 840 During the year, The Shirt Shop sold 520 T-shirts for $19 each. Required Compute the amount of ending inventory The Shirt Shop would report on the balance sheet, assuming the following cost flow assumptions: (1) FIFO, (2) LIFO, and (3) weighted average. Compute the difference in gross margin between the FIFO and LIFO cost flow assumptions.