This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of skin, Subject name: Dental
[{'content': 'Nails are involved in all except - \nSelect and explain. \nA. Psoriasis, B. Lichen planus, C. Tinea, D. DLE', 'role': 'user'}, {'content': 'Answer: D \nExplanation: question repeated', 'role': 'assistant'}]