Answer:
Option D. Interdependence and price wars are characteristics of firms in a market structure such as an oligopoly.
Step-by-step explanation:
An oligopoly is a market structure in which there are a small numbers of firms, none of which can keep the others from gaining a significant amount of influence. Is because of this concept that two of the main characteristics of an oligopoly is the interdependence between the firms, and the price wars they get into, as the interdependence and small amount of firms in the market leads to an increase in competition and to a lack of a price pattern behavior.