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
Streptococcus causing neonatal meningitis among the following is: 
Select and explain. 
A. Streptococcus Pyogenes, B. Streptococcus equisimilis, C. Streptococcus agalactiae, D. Streptococcus bovis
C: Streptococcus agalactiae
Answer: C: Streptococcus agalactiae 
Explanation: Infection is classified as early onset & late onset. In early onset it occurs within a week of bih & late occurs between 2nd & 12th week of life. Early onset presents as septicaemia, meningitis or pneumonia. Infection is acquired from maternal vagina during bih. Late onset obtained from environment. Ref: Ananthanarayan and Panicker's, 8th Edition, Page 215