This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharynx, larynx and trachea and cranial nerves 3,4,6, Subject name: Anatomy
[{'content': 'Which muscle is responsible for abduction of vocal cord, in the given diagram \nSelect and explain. \nA. A, B. B, C. C, D. D', 'role': 'user'}, {'content': 'Answer: C \nExplanation: A - Lateral cricoarytenoid muscle. B - Inter arytenoid muscle C - Posterior cricoarytenoid muscle D - Cricothyroid muscle', 'role': 'assistant'}]