the following holds: (1) there is no incentive for firms to enter or exit the industry.(@)for some firms in the industry short-run average total cost is greater than long-run average total cost at the level of output where marginal revenue equals marginal cost;(3) all firms in the industry are currently producing the quantity of output at which marginal revenue equals marginal cost;(4) all firms in the industry are producing a homogeneous product. is the industry in long-run competitive equilibrium? yes O no,because of numbers 1 and 2 no, because of numbers 2and 3 O no, because of number 2