Which of the Following Is Supported by Research on Sex

Which of the following is supported by research on sex differences in aggression?

A) Although girls have a reputation for being both more verbally and relationally aggressive than boys,the sex difference is small.
B) Contrary to popular belief,girls are more physically aggressive than boys during the preschool years.
C) Girls are significantly more likely than boys to engage in verbal and relational aggression.
D) Throughout early and middle childhood,girls tend to inflict harm in more variable ways than boys do.