Margaret, Who Is Almost Twelve, Has Never Had a Conversation

Margaret, who is almost twelve, has never had a conversation with her parents about menstruation. According to your authors, Margaret's parents . . . ​

A) do not need to worry about discussing menstruation with Margaret, because no doubt this has been covered in school.
B) should wait until Margaret asks them about menstruation.
C) should not bring up the topic of menstruation with Margaret because she likely would much rather discuss this with her peers than with them.
D) may want to bring up the topic of menstruation with Margaret to ensure she has a chance to talk about it before she experiences it.