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': 'Fogo selvagem is a type of: \nSelect and explain. \nA. Pemphigus vulgaris, B. Pemghigus vegetans, C. Pemphigus foliaceus, D. Bullous pemphigoid', 'role': 'user'}, {'content': "Answer: C \nExplanation: Endemic pemphigus foliaceus common in rural pas of South America, paicularly ceain states of Brazil is known as fogo selvagem (wild fire) caused by bite of black fly. Ref: Rook's textbook of dermatology, 8th edition, Pg 40.13", 'role': 'assistant'}]