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
[{'content': 'The growth of porphyromonas gingivalis is enhanced by a metabolic byproduct succinate produced by \nSelect and explain. \nA. Streptococcus, B. Capnocytophaga, C. Actinomyces, D. Veillonella', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]