Answer:
The correct answer is A: the price at which the profit is maximized.
Step-by-step explanation:
A monopoly's controller will set the price of its goods in the point where the marginal cost is the same as the marginal revenue at the quantity it decides to sell, following the Pareto Efficency state. It will also consider the demand of its products , where the consumers value the product more than its price. Therefore that a common monopoly characteristic is that the product is unique.