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: Surgery
[{'content': 'In pneumothorax due to blunt injury, choice is ? \nSelect and explain. \nA. Observation, B. Pneumonectomy, C. Thoracotomy, D. Intercostal drainage', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Intercostal drainage", 'role': 'assistant'}]