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\tbacteria\tresponsible\tfor\tcausing\tnursing\tbottle\ncaries are \nSelect and explain. \nA. Lactobacillus only, B. Streptococcus & Lactobacillus, C. Streptococcus, Lactobacillus & Veillonella, D. Strereptococcus, Lactobacillus & Neisseria', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]