Which of the Following Is True About HIV Infection

Which of the following is true about HIV infection?

A) As of 2015, only homosexual men are at risk for this infection.
B) The only persons who can be infected with HIV are women, children, and men.
C) One cannot be infected with HIV if one has sex with an infected person only once.
D) HIV is now a disease that is manageable without risk of undesirable side effects of the treatment
E) HIV is mainly a problem for the economically advantaged.