Thermo Gas,Inc.,and Uno Oil Corporation refine and sell gasoline and other petroleum products.To limit the supply of gas on the market and thereby raise prices,Thermo Gas and Uno Oil agree to buy "excess" supplies from dealers and "dispose" of it.This is

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Quizplus · Accepted Answer

Thermo Gas and Uno Oil are both in the same market, and their agreement to limit the supply and raise prices constitutes a horizontal restraint. It is an agreement between two firms on the same level of the supply chain, rather than a vertical restraint that would involve a firm at one level trying to control the behavior of firms at another level.