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: Anatomy
[{'content': 'Central nervous system develops from \nSelect and explain. \nA. Endoderm, B. Ectoderm, C. Mesoderm, D. All 3 germ layers', 'role': 'user'}, {'content': 'Answer: B \nExplanation: CNS develops from Neuroectoderm.', 'role': 'assistant'}]