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': 'A 3-year-old male child presents with multiple laryngeal papillomas with hoarse voice and slight airway distress. Papillomas are involving the glottis. The best treatment is: \nSelect and explain. \nA. Tracheostomy and observation, B. Steroids, C. Interferon therapy, D. Microlaryngoscopy and excision', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Preferred treatment is microlaryngoscopy and excision. As the recurrence is common, repeated excisions may be required. Tracheostomy is avoided to prevent distal spread. Interferon therapy has not shown sustained benefit.', 'role': 'assistant'}]