Answer:
The correct answer is option i.
Explanation:
A firm is operating in a perfectly competitive market.
The firm is selling 200 units of output.
The price of each unit of output is $3.
In a perfectly competitive market, a single firm faces a horizontal line demand curve. This horizontal line represents demand, price line, average revenue, and marginal revenue.
So if the price is $3, it implies that the marginal revenue and average revenue is also equal to $3.
The total revenue is $600.