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': 'Regarding abdominal eneurysm, all are true except \nSelect and explain. \nA. More common in males, B. Transverse diameter of aorta in an aneurysm should be 3cm or more, C. Splenic artery aneurysm is most common, D. Common in smokers', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Abdominal aortic aneurysm is the most common abdominal aneurysm. splenic artery\xa0aneurysm is 2nd most common.', 'role': 'assistant'}]