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
Bacteria implicated in dental caries is: 
Select and explain. 
A. Streptococcus mutans, B. Pneumococci, C. Streptococcus pyogenes, D. Staphylococcus aureus
A: Streptococcus mutans
Answer: A: Streptococcus mutans 
Explanation: S. mutans and Streptococcus sobrinus have a central role in the etiology of dental caries, because these can adhere to the enamel salivary pellicle and to other plaque bacteria.