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': "Crocodile skin or sauroderma is seen in : \nSelect and explain. \nA. Toxic epidermal necrolysis, B. Psoriasis, C. Darier's disease, D. Ichthyosis vulgaris", 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Ichthyosis vulgaris', 'role': 'assistant'}]