A columnist on forbes.com offered the following advice to retailers practicing price discrimination: “Consumers don’t much like the idea of other people getting better deals than are offered to them, and retailers need to be careful not to turn differentiated pricing into discriminatory pricing. There has to be a legal and ethical rationale for offering different prices to different customers.” What would be a legally acceptable reason for offering different prices to different customers? What would be a legally unacceptable reason? Are there situations in which price discrimination might be legally acceptable but ethically unacceptable? Briefly explain.