Marlow Company uses a perpetual inventory system. It entered into the following calendar-year 2011 purchases and sales transactions Date Activities Units Acquired at Cost Units Sold at Retail 200 units @ $40/unit 400 units@$75/unit units @ $48/unit yo-YYB + ( a6- 10 Sales 200 units@$7S/unit 600 units Required 1. Compute cost of goods available for sale and the number of units available for sale. 2. Compute the number of units in ending inventory. 3. Compute the cost assigned to ending inventory using ( FIFO b) LIFO, () specific identification- 5344 units sold consist of 500 units from beginning inventory and 100 unity form the March 13 purchase, and(d) yeighted average cost. (Round per unit costs to three dectmals, but inventory balances to the 4.) Compute gross profit earned by the company for each of the four costing methods in part 3 Analysis Component 5. If the company's manager earns a bonus based on a percent of gross profit, which method of inventory costing will the manager likely prefer