This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Which of the following is a lentivirus \nSelect and explain. \nA. HIV, B. HBV, C. HCV, D. Rabies virus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., HIV The etiologic agent of AIDS is HIV, which belongs to the family of human retroviruses (Retroviridae) and the subfamily of lentiviruses.HIV is also known as Human T cell lymphotrophic virus HI (HTLV-III) or Lymphadenopathy associated virus (LAV).", 'role': 'assistant'}]