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': 'Tensor tympani is supplied by: \nSelect and explain. \nA. Anterior pa of V nerve, B. Posterior pa of V nerve, C. IX nerve, D. VII nerve.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The tensor tympani muscle is derived from 1" arch is hence supplied by the nerve of 1" arch i.e. anterior branch of mandibular nerve.', 'role': 'assistant'}]