Periodic System-Calculating Ending Inventory and Cost of Sales Using Average Cost The following information is available for Willow Inc. The company maintains a periodic inventory system. A physical inventory count shows 200 units in inventory on January 31 . What is (a) ending inventory on January 31, and (b) cost of goods sold for January, using the average-cost method? - Note: Use the result EXACTLY as displayed above in the calculations below. - Note: Do not use negative signs with any of your answers. - Note: Round your final answers to the nearest whole dollar