Answer:
D) raising price while keeping output unchanged
Explanation:
In order for any type of business to survive in the long run, marginal revenue must be equal to marginal cost, or Price = Marginal cost.
If a business sells their products at a price lower than their marginal cost, it is losing money. But under certain circumstances it might do it on the short run if at least the Price = Variable costs
In this case, the monopolist must increase its price to match its marginal cost. Profits are maximized when marginal revenue equals marginal costs.
