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