This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Larynx, Subject name: ENT
[{'content': 'Mild hoarseness with stridor is seen in: \nSelect and explain. \nA. Unilateral abductor palsy, B. Bilateral abductor palsy, C. Laryngomalacia, D. Tracheal stenosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (b) Bilateral abductor palsy(Ref. Current Diagnosis & Treatment Otolaryngology, Lalwani, 3rd ed., 478)Laryngomalacia and tracheal stenosis do not affect the VC hence voice remain normal in these though stridor is present.', 'role': 'assistant'}]