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: ENT
Trench mouth is caused by 
Select and explain. 
A. β - hemalytic streptococci, B. Borrelia vincenti, C. Epstein Barr virus, D. Diphtheria
B: Borrelia vincenti
Answer: B: Borrelia vincenti 
Explanation: None