Participants in an Experiment Are Asked to Look at Pictures

Participants in an experiment are asked to look at pictures of different infants and rate the attractiveness of each infant on a 10-point scale.The participants are tested in groups of three and indicate their ratings aloud.For almost all of the infants,the participants tend to give ratings similar to other group members.Under which of the following conditions can we be most certain that their ratings represent private conformity rather than public conformity?

A) if they exhibit much less conformity in the presence of the experimenter
B) if they give the same ratings alone as they do in the group
C) if their ratings result from their desire to fit in with the rest of the group members
D) if they are not especially motivated to be accurate in their judgments