According to Research Studies by Maccoby (1998, 2002), Which of the Following

According to research studies by Maccoby (1998, 2002) , which of the following statements is true of how boys and girls interact in same-sex groups?

A) Girls are more likely to act in a reciprocal manner.
B) Boys are more likely to avoid rough-and-tumble play.
C) Girls are more likely to engage in ego display.
D) Boys are more likely to engage in collaborative discourse.