It Is Important to Understand Oligopoly Markets Because

It is important to understand oligopoly markets because:

A) although few real world markets are oligopolies,their existence raises interesting theoretical questions.
B) oligopolies typically generate more deadweight loss than monopolies.
C) oligopolies can generate a whole range of possible outcomes between monopoly and perfect competition.
D) one can predict the market outcome exactly just by knowing the number of firms in the market.