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': 'For which of the following venous abnormality is surgery indicated -a) Deep vein incompetence with DVTb) Deep vein incompetence without DVTc) Varicosity > 3 mm in diameterd) Varicosity < 3 mm in diametere) Saphenofemoral incompetence \nSelect and explain. \nA. bce, B. bc, C. acd, D. ace', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]