PA10. LO 10.3 Calculate a) cost of goods sold, b) ending inventory, and c) gross margin for A76 Company, considering the following transactions under three different cost allocation methods and using perpetual inventory updating. Provide calculations for last-in, first-out (LIFO). Sales Unit Cost $100 $140 Number of Units 240 160 520 400 400 370 230 Beginning inventory Sold Purchased Sold Purchased Sold Ending inventory 103 142 110 144