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: Medicine
[{'content': 'All are true about Abdominal aneurysm except: \nSelect and explain. \nA. Atherosclerosis is the commonest cause, B. Most commonly arises from above the level of renal aery, C. For asymptomatic aneurysms, repair is indicated if the diameter is >5.5 cm, D. Endovascular placement of an aoic stent is use for repair', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. Most commonly arises from above the level of renal aery90% of abdominal aoic aneurysm (AAA) of size > 4cm in diameter is due to atherosclerosis.Male are more frequently affected than female.The aneurysm most commonly arises below the level of renal aery.', 'role': 'assistant'}]