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: Skin
[{'content': 'Which is not a complication of PUVA therapy: \nSelect and explain. \nA. Premature aging of skin, B. Cataracts, C. Skin cancers, D. Exfoliative', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D. i.e. Exfoliation', 'role': 'assistant'}]