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
Borelia vincenti is a 
Select and explain. 
A. Mycoplasma, B. Mycobacteria, C. Spirochaete, D. Chlamydia
C: Spirochaete
Answer: C: Spirochaete 
Explanation: None