Consider the Case of a Natural Monopoly with Falling Long-

Consider the case of a natural monopoly with falling long- run average costs.If regulation sets the price equal to marginal cost,then

A) the demand curve would shift to the left.
B) the firm would earn economic profits.
C) shortages would result.
D) the outcome would be allocatively inefficient.
E) the firm would operate at a loss and eventually go out of business.