This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharyngeal Arches, Subject name: Anatomy
[{'content': 'All of the following muscles are derived from 6th brachial arch EXCEPT: \nSelect and explain. \nA. Lateral cricoarytenoid, B. Posterior cricoarytenoid, C. Interarytenoid, D. Cricothyroid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) CricothyroidRef: LB. Singh 9th ed. /116* Cricothyroid muscle is derived from fourth branchial arch. It is the only intrinsic laryngeal muscle not derived from 6th branchial arch* Nerve supply: Superior laryngeal nerve', 'role': 'assistant'}]