3. Using the First In-First Out (FIFO) inventory cost flow method, what is the amount allocated to ending inventory and cost of goods sold? 3(a) Ending Inventory 3(b) Cost of Goods Sold 4. Using the weighted average inventory cost flow method, what is the amount allocated to ending inventory and cost of goods sold? Please round your calculated weighted average cost per unit to 2 decimals (example - $18.79) Average Cost per unit = 4(a) Ending Inventory 4(b) Cost of Goods Sold