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': 'Caries vaccine works by all the following except \nSelect and explain. \nA. Monoclonal antibodies are formed which attach to the tooth surface by adhering to the salivary pellicle, B. Strep.mutans binds to the antibodies, C. New flora is established, D. Strep.fecalis takes the place occupied by Strep.mutans', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]