Assume that at the current output level a monopolist is breaking even and has marginal revenue of $7 and a marginal cost of $4. Which of the following is an accurate conclusion with regard to the monopolist's profit? O The firm could increase its profit by shutting down. O The firm could increase its profit by increasing its output. O The firm could increase its profit by increasing its price. The firm is producing the profit- maximizing output. O The firm could increase its profit by decreasing its output