4. Compute giUSS Montoure Company uses a perpe purchases and sales transactions. (For specific identification, units sold consist oaar-year 201S ning inventory, 300 from the February 10 purchase, 20 21 purchase, and 250 from the September 5 purchase.) tual inventory system. It entered into the following 2015 from the March 13 purchase, 50 from the August transactions. (For specific identi Units Acquired at Cost Units Sold at Retail Activities Date 600 units @ $45.00 per unit 400 units@ $42.00 per unit 200 units@ $27.00 per unit Jan. 800 units@ $75.00 per unit 100 units @ $50.00 per unit 500 units @$46.00 per unit 600 units 1,400 units $75.00 per unit Sept. 10 Sales Totals Required 1. Compute cost of goods available for sale and the number of units available for sale. Compute the number of units in ending inventory. . Compute the cost assigned to ending inventory using (a) FIFO, (b) LIFO, (c) weighted average, and (d) specific identification. (Round all amounts to cents.) . Compute gross profit earned by the company for each of the four costing methods in part 3. nalysis Component If the company's manager earns a bonus based on a percent of gross profit, which method of inventor costing will the manager likely prefer