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: Microbiology
[{'content': 'HIV virus has predilection for infecting: \nSelect and explain. \nA. CD4 + T cells, B. CD 8 cells, C. Macrophages, D. Plasma cells', 'role': 'user'}, {'content': 'Answer: A \nExplanation: CD4 + T cells', 'role': 'assistant'}]