86. If the market demand for the product increases, in the short run a purely competitive firm:A. Will not change its output quantity because there are so many firms that the individual firm will not be affected by the changeB. Will earn higher profits or experience smaller losses as a result of the change in the marketC. Will experience no change in costs as it steps up production in response to the change in the marketD. Can employ more inputs and increase the size of its plant, to respond to the change in the market