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': 'Interstitial Emphysema may be found in the following conditions - \nSelect and explain. \nA. Chest injury, B. Tracheostomy, C. Surgical wound, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]