Use Figure: Monopoly Profit Maximization

Use Figure: Monopoly Profit Maximization. The figure shows the demand, marginal revenue curve, marginal cost curve, and average total cost curve that are faced by a monopolist. The profit-maximizing price for the monopolist is _____, and the profit-maximizing quantity is _____ units.
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Figure: Monopoly Profit Maximization

A) $14; 70
B) $14; 50
C) $10; 70
D) $10; 50