This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'HIV infects most commonly - \nSelect and explain. \nA. CD4+helper cells, B. CD8+cells, C. Macrophage, D. Neutrophil', 'role': 'user'}, {'content': "Answer: A \nExplanation: The primary oathigenic mechanism in HIV infection is the damage caused to the CD4+T lymphocyte. REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:574", 'role': 'assistant'}]