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': 'The receptor through which M-tropic HIV strains bind- \nSelect and explain. \nA. CCR 5, B. CXR4, C. CXCR5, D. Any of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: voteceptor CCR5 for macrophage tropical strain REF:MICROBIOLOGY ANANTHA NARAYANAN NINTH EDITION PAGE.574', 'role': 'assistant'}]