which of the followingpractices is Uber implementing? a) Charging different prices to customergroups based on the elasticity of theirdemand. b) Using Surge pricing to manage excessdemand by charging higher prices at peakhours. discrimination, usingc) Practicing pricedynamic pricing. d) Maximizing profits by charging differentprices to different people at differenttimes for the same service.e) All of the above