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
Kelly's medium is used in the isolation of - 
Select and explain. 
A. Leptospira, B. Borrelia, C. Bartonella, D. Brucella
B: Borrelia
Answer: B: Borrelia 
Explanation: None