Which of the following best states the main difference between a monopoly
and an oligopoly?
A. Monopolies have a slightly lower level of market concentration
than oligopolies.
B. Both monopolies and oligopolies involve a very low level of
competition.
O
C. Oligopolies involve more than one company while monopolies
involve only one.
) D. Neither a monopoly nor an oligopoly presents significant barriers
to entering the industry.