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': 'Berkeley membrane is seen in: \nSelect and explain. \nA. Psoriasis, B. Pemphigus, C. Tinea capitis, D. Pityriasis rubra', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Psoriasis', 'role': 'assistant'}]