In His Attempts to Persuade Roger to Get a Fraternity

In his attempts to persuade Roger to get a fraternity tattoo on his arm, Dan assembles one hundred tattooed fraternity members. Dan probably wasted a lot of effort in doing so, because

A) the effect of group size on conformity is relevant only for women.
B) group size matters for informational social influence, but not normative social influence.
C) the effect of group size on conformity levels off when group size reaches about three to four people.
D) group size does not affect conformity levels.