method would it choose? P6-29A Accounting for inventory using the perpetual inventory system- FIFO, LIFO, and weighted average, and comparing FIFO, LIFO, and weighted average Steel Mill began August with 50 units of iron inventory that cost $35 each. During August, the company completed the following inventory transactions: 5. Units Unit Cost Unit Sales Price $85 45 Aug. 3 8 Sale Purchase 90 $54 21 Sale 88 30 Purchase 15 58 Requirements 1. Prepare a perpetual inventory record for the merchandise inventory using the FIFO inventory costing method. 2. Prepare a perpetual inventory record for the merchandise inventory using the LIFO inventory costing method. 3. Prepare a perpetual inventory record for the merchandise inventory using the weighted average inventory costing method. 4. Determine the company's cost of goods sold for August using FIFO, LIFO, and weighted-average inventory costing methods. 5. Compute gross profit for August using FIFO, LIFO, and weighted average inven- tory costing methods. 6. If the business wanted to maximize gross profit, which method would it select