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': "'Cayenne pepper' stippling due to hemosiderin is found in : \nSelect and explain. \nA. Erythroplasia of Queyrat, B. Pagets disease, C. Plasma cell balantitis of zoon, D. Metronidazole", 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Plasma cell balantitis of zoon', 'role': 'assistant'}]