Problem 9.2 Part 8 The company uses the perpetual inventory method and started the month of November with 500 units of inventory at a cost of $3 each. Purchases November 5, 500 units at $5 each November 18, 500 units at $6 each November 29, 500 units at $9 each Sales November 12, 400 units sold at $14 each November 25, 900 units sold at $14 each 1. Use the following format to set up this inventory costing problem, as shown in Video 112. Inventory Cost per Total Cost Unit Date Units Date Units Total Cost Bez Balance Units Cost Beginning Balance + Purchases Goods Available for Sale - Sold Ending Balance 2. Use the moving weighted average method to calculate cost of goods sold and ending inventory. 3. Calculate the company's gross margin based on using the average cost method