Which of the following statements is true?

A. An HIV-positive person can stay healthy as long as they start HIV medication and continue taking the medicine as prescribed.
B. At the moment, there are no medications that control HIV so that someone who is HIV-positive can manage the virus and live longer.
C. HIV is the illness that follows once AIDS has weakened the person's immune system so that it cannot fight off infection.
D. The human body can rid itself of HIV completely, just like it can with a number of other contagious viruses.