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': 'High tracheotomy is done in \nSelect and explain. \nA. Vocal cord palsy, B. Laryngeal carcinoma, C. Subglottic stenosis, D. Laryng omalacia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Only indication for high tracheostomy - Laryngeal carcinoma.', 'role': 'assistant'}]