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 March 1 March 5 March 9 March 18 March 25 March 29 Units Acquired at cost 100 units @ $50 per unit 400 units $55 per unit Units sold at Retail Activities Beginning inventory Purchase Sales Purchase Purchase Sales Totals 420 units $85 per unit 120 units 200 units @ $60 per unit @ 562 per unit 820 units 160 units $95 per unit 580 units es 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 80 units from beginning inventory, 340 units from the March 5 purchase 40 units from the March 18 purchase, and 120 units from the March 25 purchase. (Round weighted average cost per unit to 2 decimal places.) Gross Margin FIFO LIFO Weighted Average Specific ID Sales Les Cost of goods sold Gross profit