The following are characteristics of an oligopoly market, except: A. Interdependence of firms B. High concentration ratio C. Easy to enter or leave the industry D. Product differentiation and price setters Q4. Which of the following statements best describes opportunity cost? A. The money value of an opportunity in producing a good B. Having limited resources to produce all goods and services we desire C. The value of next best alternative forgone when we make a choice D. Making choices among the available options