What Was the Difference Between the Participants in the Asch

What was the difference between the participants in the Asch line-size experiment and the Sherif light-movement experiment?

A) In the Sherif experiment, all participants were naïve subjects.
B) In the Asch experiment, all participants were naïve subjects.
C) In the Sherif experiment, some participants were actually accomplices.
D) In the Asch experiment, none of the participants were actually accomplices.