This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'The receptor through which M-tropic HIV strains bind \nSelect and explain. \nA. CCR5, B. CXCR4, C. CXCR5, D. Any of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: .', 'role': 'assistant'}]