This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Papulosquamous disorders, Subject name: Dental
[{'content': 'In which of the following, Koebner phenomenon is NOT seen - \nSelect and explain. \nA. Lichen planus, B. psoriasis, C. lichen nitidus, D. Lichen simplex chronicus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: koebners phenomenon is seen in lichen planus,psoriasis, lichen nitidus,vitiligo IADVL textbook of dermatology, page 107', 'role': 'assistant'}]