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
The receptor through which M-tropic HIV strains bind 
Select and explain. 
A. CCR5, B. CXCR4, C. CXCR5, D. Any of the above
A: CCR5
Answer: A: CCR5 
Explanation: .