O Required information (The following information applies to the questions displayed below.) Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March Date Activities Units Acquired at Cost Units Sold at Retail March 1 Beginning inventory 220 units @ $53.4e per unit March 5 Purchase 285 units 558.40 per unit March 9 Sales 380 units @ $88.40 per unit March 18 Purchase 145 units @ $63.40 per unit March 25 Purchase 270 units @ $65.40 per unit March 29 Sales 250 units @ $98.40 per unit Totals 920 units 630 units 4. Compute gross profit earned by the company for each of the four costing methods, For specific identification, units sold include 125 units from beginning inventory, 255 units from the March 5 purchase, 105 units from the March 18 purchase, and 145 units from the March 25 purchase (Round weighted average cost per unit to two decimals and final answers to nearest whole dollar.) FIFO LIFO Weighted Average Specific ID Gross Margin Sales Less Cost of goods sold Gross profit >