Beginning Inventory, purchases and sales data for cell phones for March are as follows: Inventory March $1$: $1,000$ units Cost per unit: $$40$ Purchases: March $5$: $500$ units at $$42$ March $20$: $450$ units at $$44$ Sales: March $8$: $700$ units March $14$: $600$ units March $31$: $300$ units.

Assuming that the perpetual inventory system is used, costing my the LIFO method, determined the cost of merchandise sold for each sale and inventory balance after each sale, pesenting the data in the form illustrated in exhibit $4$