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: Microbiology
[{'content': 'Which of the following is responsible for dental caries? \nSelect and explain. \nA. S.Mutans, B. S.Mitis, C. S.Sanguis, D. All the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Dental caries are believed to be caused by viridians streptococci which also includes S. Salivarius along with the ones given above. Pathogenesis of dental carries: Changes in chemical composition of dental plaque fluid following sucrose exposure reflects a combination of interrelated factors and processes that include diffusion, bacterial metabolism, buffering and the influences of saliva. 4 Types of Caries: Pit & Fissure Caries : Caused by S mutans, S sanguis, Other streptococci, Lactobacillus sp, Actinomyces sp Smooth surface Caries: Caused by S mutans, S salivarius Root surface: Caused by A viscosus, A naeslundi, Othr filamentous rods, S mutans, S sanguis, S salivarius Deep dentinal caries: Caused by Lactobacillus sp, A naeslundi, A viscosus, Othr filamentous rods, S mutans', 'role': 'assistant'}]