Which of the Following Statements About Social Identity and De-Individuation

Which of the following statements about social identity and de-individuation is appropriate?

A) Using information system for communication always help users strengthen their feelings about social identity;
B) Compared to face-to-face communication, a person may feel less belongingness when the communication happens through a communication system;
C) The psychological states in using communication systems can greatly enhance the impact of social norms on users;
D) "Flaming" in the use of listserv is a well-regulated behavior;
E) Individuation of users is a very typical effect on the user population brought by the application of collaboration systems.