This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Haemophilus, Yersinia, Spirochaetes, Ricketssia, Chlamydia, Mycoplasma and Miscellaneous Bacteria), Subject name: Microbiology
Erythema chronicum migrans is caused by? 
Select and explain. 
A. Borrelia japonica, B. Borrelia andersonii, C. Borrelia burgdorferi, D. Borrelia recurrentis
C: Borrelia burgdorferi
Answer: C: Borrelia burgdorferi 
Explanation: Erythema chronicum migrans is a rash often seen in the early stages of Lyme disease. It is caused by the spirochete Borrelia burgdorferi. Lyme disease is a zoonosis which is spread to humans by tick bite The rash appears a few days after the tick bite