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': 'Louse borne relapsing fever - \nSelect and explain. \nA. B duttoni, B. B recurrentis, C. B parkeri, D. B burgdorferi', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]