This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thyroid, Subject name: Surgery
[{'content': 'Most common nerve injured during thyroidectomy \nSelect and explain. \nA. External laryngeal nerve, B. Recurrent laryngeal nerve, C. Vagus nerve, D. Facial nerve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: MC injured nerve - External branch of superior laryngeal nerve (aka External laryngeal nerve)', 'role': 'assistant'}]