Answer:
A is the correct answer.
Step-by-step explanation:
Oligopoly is the market form in which a small number of large sellers dominate. It results in the reduction of the competition and leads to higher prices for consumers. they have their market structure. In oligopoly each firm stays aware of others, hence their decisions influence others and vice versa. The developed economies are dominated by Oligopolies. For example, if the total market share of the American telecom companies (Verizon wireless, AT and T and T mobile ) is combined, it comes out to be more than ninety percent.