Why Do Women Tend to Go to Public Restrooms in Groups

Why do women tend to go to public restrooms in groups, according to recent research on gender role scripts?

A) They are driven to show empathy and understanding as often as possible when in social interactions.
B) They fear that any women left behind might disclose secrets to others.
C) They are so attuned to peer pressure that sensors in the bladder are triggered when the lead woman in a social group announces the need to go.
D) None of the above.