Answer:
Option (D) is correct.
Explanation:
Profit margin refers to the earnings of a producer on every unit sold in the market.
The profit margin is calculated by dividing the total profit by the total quantity produced.
Profit margin = Total profit ÷ Quantity produced
Above formula says that profit margin gives us the per unit profit and the average profit also shows the per unit profit.
Profit margin = Price - Average cost ⇒ This will also gives us the per unit profit.
