In a Typical Classroom,informal Contact Between Students Is Often Called

In a typical classroom,informal contact between students is often called "talking to your neighbour" and is discouraged.This violates which precondition for the reduction of prejudice and hostility between students?

A) Contact must occur in a tightly structured situation controlled by authority.
B) Contact must occur in situations in which social norms promote equality.
C) Contact must occur in situations that minimize stereotypical beliefs
D) Contact must occur in the service of attaining a common goal.
E) Contact must occur in a friendly setting where group members can interact on a one-to-one basis.