The Shirt Shop had the following transactions for T-shirts for Year 1, its first year of operations: Jan. 20 Purchased Apr. 21 Purchased July 25 Purchased Sept. 19 Purchased 330 units @ $ 5 = $1,650 90 units @ $ 6 = 540 210 units @ $ 8 = 1,680 80 units @ $10= 800 During the year, The Shirt Shop sold 530 T-shirts for $15 each. Required a. 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. b. Compute the difference in gross margin between the FIFO and LIFO cost flow assumptions.