This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Preoperative assessment and monitoring in anaesthesia, Subject name: Anaesthesia
[{'content': 'Emergency tracheostomy is not indicated in \nSelect and explain. \nA. Foreign body larynx, B. Bilateral vocal cord paralysis, C. Stridor due to laryngeal growth, D. Acute severe asthma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Emergency tracheostomy is not indicated in asthma.', 'role': 'assistant'}]