In the Short Run, a Firm in a Monopolistic Competition

In the short run, a firm in a monopolistic competition will produce the amount of output where its

A) marginal revenue equals marginal cost and will set its price according to the demand for that amount of output.
B) marginal revenue equals marginal cost and takes the market price as given.
C) average revenue equals average cost and will set its price according to the demand for that amount of output.
D) average revenue equals its average cost and takes the market price as given.