a monopolist has the following pricing and revenue structure. if the firm’s marginal cost per customer is $30, and the firm wants to follow the profit-maximizing rule, what would be the firm’s quantity of customers and price charged per customer? click or tap a choice to answer the question. the quantity of customers is 3,000, and the price is $30. the quantity of customers is 4,000, and the price is $30. the quantity of customers is 3,000, and the price is $70. the quantity of customers is 4,000, and the price is $60.