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: Dental
[{'content': 'Kobner phenomenon is present in all except – \nSelect and explain. \nA. Psoriasis, B. Lichen planus, C. Warts, D. None', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]