Which two of the following statements about Milgram's obedience research are correct?

Shade two boxes only.

Milgram's research showed that...

• A obedience decreases when the teacher and learner are in the same room.
• B people naturally conform to social roles in institutional environments.
• C obedience is increased when the authority figure wears a uniform.
• D group size is the main social variable affecting obedience.
• E obedience is higher when experimental instructions are delivered over the phone.