Which Statement About HIV Postexposure Prophylaxis (PEP) for Health-Care Workers

Which statement about HIV postexposure prophylaxis (PEP) for health-care workers is the most accurate?

A) PEP should be started within hours of exposure.
B) PEP should be started within 72 hours of exposure.
C) Renal and hepatic function tests should be done 6 weeks after beginning PEP.
D) PEP will prevent potential hepatitis C infection if present.