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: Microbiology
[{'content': 'Pinta is caused by \nSelect and explain. \nA. Treponema peenue, B. Treponema cerateum, C. Treponema pallidum, D. Treponema endemicum', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Treponema cerateum', 'role': 'assistant'}]