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 which one of the following conditions is gas under diaphragm not seen- \nSelect and explain. \nA. Perforated duodenal ulcer, B. Typhoid perforation, C. After laparotomy, D. Spontaneous rupture of oesophagus', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Spontaneous rupture of oesophagus", 'role': 'assistant'}]