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Table: Total Cost and Output Output Total Cost 0 $ 10 60 SO 110 170 245 Reference: Ret 12-18 Table: Total Coat and Output FE (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? Select one: O a $150 O b. $680 O c. $330 O d. $40