The Key Argument of Social Identity Theory and De-Individuation Processes

The key argument of Social Identity Theory and De-individuation Processes (SIDE) is:

A) Information systems help protect users by hiding their identities;
B) Information systems de-individuate users by giving everyone the same appearance in the system;
C) Information systems such as email systems reduce the impact of social norms and constraints;
D) Information systems relies on numbers to identify users, which ignores all individual characteristics;
E) The use of information systems threatens the security of users' social identity.