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': 'Which bacteria show lashing motility \nSelect and explain. \nA. Treponema, B. Borrelia, C. Mycoplasma, D. Giardia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Borrelia shows lashing motility due to endoflagella.', 'role': 'assistant'}]