This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NPCBVI, NACP, Subject name: Social & Preventive Medicine
For post-exposure prophylaxis of HIV is:- 
Select and explain. 
A. Tenoir + Lamivudine for 4 weeks, B. Lamivudine + Ritonavir for 4 weeks, C. Zidovudine + Lamivudine + Indinavir for 4 weeks, D. Single dose Zidovudine + Lamivudine + Indinavir
A: Tenoir + Lamivudine for 4 weeks
Answer: A: Tenoir + Lamivudine for 4 weeks 
Explanation: New post-exposure guidelines for HIV for adolescents and adults: Preferred backbone regimen: Tenofovir + Lamivudine for 4 weeks. Preferred third drug: Lopinavir / Ritonavir or Atazanavir / Ritonavir.