Kenyon and Ben Are a Married Male Couple

Kenyon and Ben are a married male couple. Ben is HIV positive, but Kenyon is not. Kenyon and Ben should do all of the following to reduce Kenyon's risk of contracting HIV from Ben EXCEPT:

A) Ben should start the HAART treatment immediately and adhere to the dosing guidelines.
B) use a condom every time they have sex.
C) only use a condom with penile-anus sex, but not oral sex.
D) Kenyon should begin the preexposure prophylaxis (PrEP) treatment plan.