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': 'Pain in post 1/3 tongue after tonsillectomy Is due to injury to - \nSelect and explain. \nA. VII nerve, B. IX nerve, C. V nerve, D. XII nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Taste sensation as well as general sensations from posterior 1/3 of tongue are carried by glossopharyngeal nerve.', 'role': 'assistant'}]