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': 'Which of the following is not done in case of obstructed inguinal hernia -a) Aspiration of the sac for diagnosisb) X-ray abdomen c) USG abdomen d) Do early surgery \nSelect and explain. \nA. ab, B. abc, C. acd, D. bcd', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]