This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
[{'content': 'Erythema chronicum migrans as seen in the illustration is caused by: \nSelect and explain. \nA. Borrelia japonica, B. Borrelia burgdorferi, C. Borrelia andersoni, D. Borrelia recurrentis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. Borrelia burgdorferiERYTHEMA CHRONICUM MIGRANSa. Erythema chronicum migrans is a rash often seen in the early stages of Lyme disease.b. It is caused by the spirochete Borrelia burgdorferi.c. Lyme disease is a zoonosis which is spread to humans by tick bited. The rash appears a few days after the tick bite', 'role': 'assistant'}]