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 weighted average (AVG). Round "Unit Cost" answers to 2 decimal places and other answers to the nearest dollar amount. Number of Units Unit Cost Sales Beginning Inventory Sold 260 $120 160 $160 Purchased 500 123 Sold 400 162 Purchased 420 130 Sold 370 194 Ending Inventory 250 Cost of Goods Purchased AVG (perpetual) Inventory Cost of Goods Sold #units Unit Cost Total Cost #units Unit Cost Total Cost #units Cost of Inventory Remaining Unit Cost Total Cost Beginning Sale Purchase Sale Purchase Sale Total Purchases Total COGS Gross Margin, AVG perpetual Sales COGS Gross Margin