in the long run, which is true of a perfectly competitive firm? in the long run, which is true of a perfectly competitive firm? the firm does not achieve any efficiencies in the long rung the firm achieves productive efficiency, allocative efficiency, 0 economic profit, but not positive accounting profit the firm achieves productive efficiency, allocative efficiency but not normal profit the firm achieves productive efficiency, allocative efficiency, normal profit, and 0 economic profit
