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: Medicine
[{'content': 'HIV binds to macrophages having \nSelect and explain. \nA. CD4 molecule, B. CD4 & CXCR molecules, C. CD4 & CCR5 molecule, D. CXCR & CCR5 molecules', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]