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': 'Duramater of posterior cranial fossa is supplied by all except \nSelect and explain. \nA. Hypoglossal nerve, B. Vagus nerve, C. Spinal accessory nerve, D. Facial nerve', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Nerve supply of duramater of posterior cranial fossa\xa0 7th, 9th, 10th, 12th cranial nerves and spinal nerves C1, C2, C3', 'role': 'assistant'}]