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: Surgery
[{'content': 'Most common injured nerve after thyroidectomy is : \nSelect and explain. \nA. External laryngeal nerve, B. Recurrent laryngeal nerve, C. Superior laryngeal nerve, D. Nerve to omothoid', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]