In a Meta-Analysis of Studies on Teens' Sexual Decision Making

In a meta-analysis of studies on teens' sexual decision making including nearly 70,000 adolescents in 15 countries, von de Bongardt et al. (2015) found that

A) beliefs about others' behavior were more important than the actual sexual attitudes of peers.
B) there were positive outcomes for both boys and girls who decided to have early sex.
C) the experience of first intercourse was almost similar for both young women and men.
D) adolescents who opted for friends with benefits were romantically involved and always had sex with their partners.