What Does the Asch Studies on Line-Judgments in Group Settings

What does the Asch studies on line-judgments in group settings tell us?

A) Social roles are one of the most important sources of situational influence.
B) People can become very aggressive when they are asked to conform.
C) People are very unlikely to publically comply with normative influence.
D) People will often conform to a group opinion, even if it goes against their own perception.