This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Surgery
[{'content': 'In CEAP clinical classification what does C-4b indicate \nSelect and explain. \nA. Edema, B. Pigmentation or eczema, C. Healed venous ulcer, D. Lipodermatosclerosis or atrophie blanche', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The CEAP (Clinical - Etiology - Anatomy - Pathophysiology)classifi cation for chronic venous disorders is widely utilised.Clinical classification* C0: no signs of venous disease* C1: telangectasia or reticular veins* C2: varicose veins* C3: oedema* C4a: pigmentation or eczema* C4b: lipodermatosclerosis or atrophie blanche* C5: healed venous ulcer* C6: active venous ulcer', 'role': 'assistant'}]