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: ENT
[{'content': 'Tensors of vocal cord are \nSelect and explain. \nA. Posterior cricothyroid, internal interarytenoid, B. Lateral cricothyroid, internal interarytenoid 1, C. Thyroarytenoid, internal interarytenoid, D. Cricothyroid and internal thyroarytenoid', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Intrinsic muscles acting on vocal cords: Abductors: Posterior cricoarytenoid Adductors: Lateral cricoarytenoid, lnterarytenoid (transverse arytenoid) Thyroarytenoid (external pa) Tensors: Cricothyroid, Vocalis (internal pa of thyroarytenoid) Intrinsic muscles acting on laryngeal inlet: Openers of laryngeal inlet: Thyroepiglottic (pa of thyroarytenoid) Closers of laryingeal inlet: Interarytenoid (oblique pa), Aryepiglottic (posterior oblique pa of interarytenoids)', 'role': 'assistant'}]