Which of the Following Is TRUE of the Possibility of Contracting

Which of the following is TRUE of the possibility of contracting HIV through sexual transmission?

A) The bottom partner is 13 times less likely to get infected than the top partner in unprotected sex.
B) The highest oral sex risk is to individuals (male or female) to whom an HIV-infected man ejaculates in his or her mouth.
C) Giving or receiving cunnilingus carries a higher chance than that from unprotected anal or vaginal sex with an HIV-positive person.
D) The risk of transmission through vaginal sex is very low when compared to closed-mouth or social kissing with an HIV-positive person.