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: ENT
[{'content': 'Esthesio Neuroblastoma is tumour arising from \nSelect and explain. \nA. Spinal cord, B. Piamater, C. Olfactory nasal mucosa, D. Arachnoid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]