Assignment $1$: Inventory Valuation Beginning Inventory: $100$ units @ $$1$First Purchase: $200$ units @ $$2$Second Purchase: $300$ units @ $$3$Third Purchase: $400$ units @ $$4$Ending Inventory: $200$ unitsRequired: Based on the above data, compute the ending inventory and cost of goods sold, usinga$)$ FIFOb$)$ LIFOc$)$ Average Cost