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
"Dark Ground Illumination" helps to detect: 
Select and explain. 
A. Leptospira, B. Treponema, C. Borrelia, D. All of the above
B: Treponema
Answer: B: Treponema 
Explanation: Treponema