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: Dental
The Gram negative bacteria most numerous in oral cavity are 
Select and explain. 
A. Streptococci, B. Veillonellae, C. Selenomous, D. Eikenella
B: Veillonellae
Answer: B: Veillonellae 
Explanation: None