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: Anatomy
[{'content': 'All of these are derivative of neural crest except \nSelect and explain. \nA. Melanocyte, B. Adrenal medulla, C. Sympathetic ganglia, D. Cauda equina', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D. i.e. Cauda Equina', 'role': 'assistant'}]