PA6. LO 10.3 Use the last-in, first-out (LIFO) cost allocation method, with perpetual inventory updating, to calculate (a) sales revenue, (b) cost of goods sold, and c) gross margin for A75 Company, considering the following transactions. Number Unit of Units Cost Beginning inventory Purchased Mar. 2 105 $40 150 42 Sold Mar. 31 for $75 per unit 88