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: Dental
[{'content': 'Woods lamp used in diagnosis of – a) P. versicolorb) Vitiligoc) Porphyriad) Psoriasise) Lichen planus \nSelect and explain. \nA. abc, B. bc, C. acd, D. bcd', 'role': 'user'}, {'content': "Answer: A \nExplanation: Wood's lamp is used in Tinea capitis, Erythrasma, vitiligo, albinism, Leprosy, Tuberous sclerosis, Pseudomonas infection, Porphyria, Tinea versicolor.", 'role': 'assistant'}]