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: Pathology
[{'content': 'Dental caries is associated with \nSelect and explain. \nA. Streptococcus agalactiae, B. Streptococcus mutans, C. Streptococcus bovis, D. Streptococcus anginosus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]