The analysis used for oligopolistic firms is similar to that used for monopolies in all of the following ways except

A) price is higher than the minimum of the ATC curve.
B) output is to the left of the minimum of the ATC curve.
C) the action of rival firms must continually be taken into account.
D) both types of firms have a higher price and a lower output than a perfect competitor.

The key difference between oligopolistic firms and monopolies is how they consider the actions of rivals. Oligopolistic firms must continually take into account the actions of their competitors due to the few number of firms in the market and the interdependence between them. In contrast, a monopoly does not have rivals to consider since it is the sole provider of a good or service in the market.