On the basis of the following data, determine the value of the inventory at the lower-of-cost-or-market by applying lower-of-cost-or-market to each inventory item, as shown in Exhibit 10. Periodic Inventory by Three Methods The beginning inventory for Dunne C0, and data on purchases and sales for a three-month period are as follows: Required: 1. Determine the inventory on June 30 and the cost of goods sold for the three-month period, using the first-in, first-out method and the per inventory system. 1. Determine the inventory on June 30 and the cost of goods sold for the three-month period, using the first-in, first-out method and the periodic inventory system. 2. Determine the inventory on June 30 and the cost of goods sold for the three-month period, using the last-in, first-out method and the periodic inventory system. 3. Determine the inventory on June 30 and the cost of goods sold for the three-month period, using the weighted average cost method and the periodic inventory system. Note: Round the weighted average unit cost to the nearest dollar and final answers to the nearest dollar. 4. Compare the gross profit and June 30 inventories using the following column headings. For those boxes in which you must enter subtracted or negative numbers use a minus sign