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: Physiology
[{'content': 'Phagocytosis in the CNS is done by \nSelect and explain. \nA. Astrocytes, B. Schwann cells, C. microglia, D. Oligocytes', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Microglia in CNS has phagocytic activity.', 'role': 'assistant'}]