All of the Following Statements About Social Groups in Preschool

All of the following statements about social groups in preschool are true EXCEPT:

A) preschoolers form groups, which tend to be temporary, centering on a particular activity
B) girls tend to play in larger groups of same sex peers than do boys
C) girls playing in groups of the same sex tend to be more cooperative than boys playing in groups of the same sex
D) boys playing in groups of the same sex tend to engage in more roughhouse play than do girls playing in groups of the same sex