This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Raised ICP and Brain death, Subject name: Medicine
[{'content': 'Which cranial nerve is shown in this diagram? \nSelect and explain. \nA. Spinal accessory, B. Glossopharyngeal, C. Vagus Nerve, D. Spinal extension of Trigeminal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]