One Theory of Male Homosexuality Is Sexually Antagonistic Selection, Which

One theory of male homosexuality is sexually antagonistic selection, which involves

A) a transmission of genes occurring outside the nucleus due to mutations.
B) the same genes being expressed differently in males and females.
C) faulty genes being inherited from the mother through mitochondrial tissue within the ovum.
D) a horizontal gene transfer rather than the traditional vertical transfer that occurs in Mendelian genetics.