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 growth of porphyromonas gingivalis is enhanced by a metabolic byproduct succinate produced by 
Select and explain. 
A. Streptococcus, B. Capnocytophaga, C. Actinomyces, D. Veillonella
B: Capnocytophaga
Answer: B: Capnocytophaga 
Explanation: None