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': 'Smallest muscle in the body is: \nSelect and explain. \nA. Interarytenoid, B. Stapedius, C. Corrugator supercilli, D. Superior oblique', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Stapedius', 'role': 'assistant'}]