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
Impetigo contageosa most commonly due to – 
Select and explain. 
A. Group B streptococcus, B. Staphylococci, C. Moniliasis, D. Streptococcus viridans
B: Staphylococci
Answer: B: Staphylococci 
Explanation: Impetigo contagiosa is caused most often by staph aureus and in some cases by group 'A' streptococci.