Sarah, Courtney, Carly and Lisa sell shell necklaces. As Lisa lowers her price, Carly, Sarah as well as Courtney lower their price. If Lisa raises her price, Carly, Courtney and Sarah remain their price similar. This interaction is an illustration of: (1) price discrimination. (2) cartelization. (3) game theory. (4) strategic behavior. (5) the kinked demand curve model.
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