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': 'Rain drop pigmentation is caused by ? \nSelect and explain. \nA. Clofazimine, B. Dapsone, C. Minocycline, D. ArsenicHomosexual', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., ArsenicHomosexual", 'role': 'assistant'}]