briefly state the basic characteristics of pure competition, pure monopoly, monopolistic competition, and oligopoly. into which of these market classifications does each of the following most accurately fit? in each case, justify your classification. a. a supermarket in your hometown. (click to select) b. the steel industry. (click to select) c. a kansas wheat farm. (click to select) d. the commercial bank in which you have an account. (click to select) e. the automobile industry. (click to select)