1. Oligopoly is likely to occur whenever the number of rms is so small that any change in output or price by one rm appreciably impacts the sales of competing rms. (1 Point) 2. The practice of selling a product to different customers at different prices when marginal cost is the same is known as: (1 Point) 0 price discrimination. O monopoly pricing 0 arbitrage 0 price segregation 3. Control of a scarce resource or input can serve as an entry barrier. (1 Point)