Suppose That the Profit-Maximizing Price for a Monopolist Is $10

Suppose that the profit-maximizing price for a monopolist is $10 and the profit-maximizing quantity is 50 units. Further, the average total cost of producing 50 units is $8. The total profit for the monopolist in this scenario is:

A) $100.
B) $200.
C) $300.
D) $400.