In Which of the Following Situations Is Group Polarization Least

In which of the following situations is group polarization least likely to occur?

A) In deciding the best way to recruit new members, the members of Alpha Beta Fraternity are concerned that their fraternity is distinct from the other fraternities on campus.
B) While discussing the possibility of offering more outpatient services, the members of the hospital board are surprised that so many members favor the proposal.
C) The Senator's re-election committee discusses both the potential advantages and disadvantages of leaking negative information about the opposing candidate.
D) In one of the most important decisions it has ever faced, the prosecution team must decide whether to press criminal charges against a high ranking public official.