While the Fields of Learning and Social Psychology Look at Nature

While the fields of learning and social psychology look at nature vs. nurture for the development of sexual orientation, evolutionary psychologists believe which of the following?

A) Strong same-sex relationships increase group survival by binding a group together emotionally.
B) Having more children decreases the chance of passing on the X chromosome believed to influence sexual orientation in males.
C) Strong same sex relationship increases group survival by binding a group together socially due to common interests.
D) Having fewer children increases the fertility in women who carry the X chromosome gene.