When Adolescents in the United States Begin to Experience Specific

When adolescents in the United States begin to experience specific pubertal events, which of the following is most likely to occur?

A) A girl's mother will be the first person the girl tells that she has begun to menstruate.
B) A girl's best friend will be the first person the girl tells that she has begun to menstruate.
C) A girl is likely not to tell anyone that she is menstruating for the first several months after she begins.
D) A boy will tell his friends about his first ejaculation soon after it occurs.