Answer: All of the above
Step-by-step explanation:
The Sherman Antitrust Act outlawed trusts. These are the groups of businesses that fine together to form a monopoly so that they can dictate price.
The purpose of the Act's was firctgr promotion of economic fairness and competitiveness. The Sherman Anti-Trust Act does not prohibit a manufacturer from having a natural monopoly over its own product.
Also, it doesn't prohibit a seller to dominate a market because of superior product or business a manufacturer to sell only through a particular distributor.
Therefore, the correct option is "All of the above".