The Difference Between the Sherif Autokinetic Research and the Asch

The difference between the Sherif autokinetic research and the Asch line-comparison studies of conformity is that in Sherif's technique:

A) the situation is more concrete
B) participants are merely aware of others' judgments and the influence is mutual
C) the norms are already well established
D) it is more difficult for participants to understand
E) there is direct pressure on the participants to modify their behaviour