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': 'Indications for aneurysm surgical repair in case of symptomatic aneurysm without rupture are all except \nSelect and explain. \nA. Painful tender aneurysm, B. Aneurysm size < 5cm, C. Thrombosed aneurysm, D. Growth rate more than 5.5cm / year', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Aneurysm size more than 5.5cm\xa0\xa0is an indication for surgery.', 'role': 'assistant'}]