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': 'The innervation of the tensor tympani muscle is ? \nSelect and explain. \nA. Vagus nerve, B. Mandibular (Trigeminal) nerve, C. Facial nerve, D. Maxillary nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Stapes is the smallest bone & stapedius is the smallest muscle in the bodyQ', 'role': 'assistant'}]