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': '. Spirochetes among following are - \nSelect and explain. \nA. Syphilis, B. Leptospira, C. Borrelia, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'a' i.e., Syphilis; 'b' i.e., Leptospira; 'c' i.e., Borrelia", 'role': 'assistant'}]