A monopolist is maximizing profit at an output rate of 100 units per week. At this output rate, the price that its customers are willing and able to pay is $8 per unit, average total cost is $5 per unit, and marginal cost is $6 per unit. It may be
concluded that at this monthly output rate, marginal revenue is
A) $5 per unit, and the monopolist earns zero economic profits.
B) $6 per unit, and the monopolist earns economic profits of $200 per week.
C) $6 per unit, and the monopolist earns economic losses of $100 per week.
D) $6 per unit, and the monopolist earns economic profits of $300 per week.
Answer: D
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