What of the following statements is not true about group price discrimination?

Group of answer choices

1) in theory the good considered must be the same, but in the real world a price discriminating monopolist may need to change the good in order to charge different prices (e.g., put it into a different container or box).

2) the group of consumers with more elastic demand (as a given price) will be charged a higher price

3) it is less difficult to charge different prices to different consumers if a good is an individually provided service, such as haircuts