Sheridan Company's inventory records show the following data for the month of September: Units Unit Cost Inventory, September 1 400 $3.00 Purchases: September 8 900 4.00 September 18 700 5.00 A physical inventory on September 30 shows 600 units on hand. Calculate the value of ending inventory and cost of goods sold if the company uses LIFO inventory costing and a periodic inventory system. Ending inventory $ Cost of goods sold +A $