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: Pathology
[{'content': 'The function of oligodendrocyte is - \nSelect and explain. \nA. Myelinates the CNS, B. Nutrition of nervous tissue, C. Lining the cavities of the CVS, D. Behave like macrophages', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The principal function of oligodendrocytes is the production and maintenance of myelin in CNS - Robbins\n\nMyelination in Central nervous system\xa0→ Oligodendrocytes\nMyelination in Peripheral nervous system\xa0→ Schwann cells', 'role': 'assistant'}]