Use the Following to Answer Question

Use the following to answer question:
-(Table: Total Cost and Output) Use Table: Total Cost and Output,which describes Sergei's total costs for his perfectly competitive all-natural ice cream firm.If the market price of a tub of ice cream is $50,how much is Sergei's profit at the profit-maximizing output?

A) $680
B) $330
C) $150
D) $40