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
Dental caries is caused by - 
Select and explain. 
A. Streptococcus pyogenes, B. Streptococcus mutans, C. Enterococcus, D. H. influenzae
B: Streptococcus mutans
Answer: B: Streptococcus mutans 
Explanation: Ans. is 'b' i.e., Streptococcus mutans . Streptococcus mutans belongs to viridans streptococci and is an impoant cause of dental caries.