What Was the Finding of Sherif's Study (1936) on Conformity

What was the finding of Sherif's study (1936) on conformity when participants were asked to estimate the distance moved by a point of light?

A) Participants were more accurate when they were alone than when they were in groups.
B) Participants were more accurate in groups than when they were alone.
C) As the study progressed, the participants' estimates began to converge with each other.
D) As the study progressed, the participants' estimates began to diverge from each other.