Use the Following to Answer Questions

Multiple Choice

Use the following to answer questions:
-(Table: Total Cost and Output) Look at the 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