All of the Following Are Pieces of Evidence That Support

All of the following are pieces of evidence that support the maternal immune hypothesis as a part of the cause of same-sex attraction in males

A) Anti-H-Y antibodies in utero have been shown to disrupt brain development, but not physical development.
B) H-Y antigens cannot cross the blood-brain barrier, thus increasing their concentration in the fetal brain.
C) Cytology research shows that the maternal immune response is greater to cells from male than female children.
D) Newborn boys with older brothers tend to have a lower birth weight than boys with older sisters.