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': 'Not an indication for Tracheostomy \nSelect and explain. \nA. Flial chest, B. Respiratory distress in carcinoma larynx, C. Foreign body aspiration, D. Tetanus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]