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: Surgery
[{'content': 'Commonest spinal tumour is - \nSelect and explain. \nA. Meningioma, B. Ependymoma, C. Neurofibroma, D. Neuroblastomas', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Neurofibroma", 'role': 'assistant'}]