Which mix of statements about small firms and large firms is correct?
- Asmall firms are more common in manufacturing than in services; large firms face high barriers to exit
- Bsmall firms are more numerous than large ones; large firms do not experience diseconomies of scale
- Csmall firms can do well when each item produced must be different; large firms may arise from internal growth or mergers
- Dsmall firms cannot have any monopoly power; large firms cannot earn supernormal profits