Which of the Following Is True About the "Fraternal Birth

Which of the following is true about the "fraternal birth order effect"?

A) It shows that compared with heterosexual men,gay men tend to have fewer older brothers.
B) It shows that compared with heterosexual men,gay men are likelier to have a late birth order.
C) It shows that compared with heterosexual women,lesbians tend to have fewer older sisters.
D) It shows that compared with heterosexual women,lesbians tend to have an early birth order.