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': 'True about IHPS is all except - \nSelect and explain. \nA. Males commonly affected, B. Commonly presents at 3-8 weeks, C. X-Ray shows gastric dilation and gasless small intestines, D. USG is of no use in diagnosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]