This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Hyperpigmentation, Subject name: Skin
Rain drop pigmentation is caused by - 
Select and explain. 
A. Clofazimine, B. Dapsone, C. Minocycline, D. Arsenic
D: Arsenic
Answer: D: Arsenic 
Explanation: Ans. is 'd' i.e., ArsenicDrugs causing hyperpigmentationDrugsType of pigmentationo Clofazimineo Psoralenso Minocyclineo Bleomycino Busulfano Cyclophosphamideo Dapsoneo ArsenicOrange pigmentationBrown pigmentationBlue black discoloration in healing acnelesions, shins & mucosaGeneralized hyperpigmentationGeneralized hyperpigmentationGeneralized hyperpigmentationRain drop pigmentation