Which of the Following Statements Regarding Homosexuality Has NOT Been

Which of the following statements regarding homosexuality has NOT been supported by empirical evidence?

A) Homosexuality is a learned preference acquired when same-sex stimuli have been paired with sexual arousal.
B) Many individuals who are homosexual may initially deny their orientation, because of negative social and parental attitudes toward homosexuality.
C) In some cases, female homosexuality has been linked to prenatal exposure to abnormally high levels of androgens.
D) There are anatomical differences in the brain between homosexual and heterosexual men.