Carlson Auto Dealers Inc. sells a handmade automobile as its only product. Each automobile is identical; however, they can be distinguished by their unique ID number. At the beginning of 2021, Carlson had three cars in inventory, as follows: Cost Car ID 203 207 210 $ 84,000 84,000 87,000 During 2021, each of the three autos sold for $114,000. Additional purchases (listed in chronological order) and sales for the year were as follows: Cost Car ID 211 212 213 214 215 216 217 218 219 $ 84,000 84,000 85,500 87,000 90,000 88,500 93,000 90,300 96,000 Selling Price $114,000 117,000 not sold 120,000 124,500 not sold 129,000 130,500 not sold 4. Calculate ending inventory and cost of goods sold assuming the average cost method and a periodic inventory system. Average Cost Method Periodic Ending inventory Cost of goods sold