Roche Corporation sells hand-crafted desks in Grand Rapids, MI and employs a periodic inventory system. During the month of May, Roche sells 12 units and reports the following beginning inventory and purchase information: Date Explanation Units Unit Cost Total Cost May 1 Beginning inventory 10 $100 $1,000 May 20 Purchase 4 120 480 May 25 Purchase 4 132 528 May30 Purchase 5 140 700 Instructions 1. Compute the cost of goods sold for May using the FIFO method. 2. Compute ending inventory at May 31 using the LIFO method. 3. Compute cost of goods sold for May using the weighted-average method. 4. Identify which method would maximize Roche's net income.