Answer:
Firm B is in the auto rental business. It is not the nation’s largest rental company, but significant barriers to entry enable it to serve customers across the United States more conveniently and at a lower price than local rivals.
Step-by-step explanation:
For the given options we considered Firm B to be treated as the oligopolist as the firm nor its competitors would have the major impact over the market also there are entry & exit barriers from the market
So the firm B should be chosen as the oligopolist
Therefore the same should be considered and relevant