This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': "True about streptococcus is \nSelect and explain. \nA. Lancefield classification is based on M protein, B. Group 'G' not found in human, C. Group 'B' causes neonatal meningitis, D. Grop 'C' can be isolated from vaginal flora", 'role': 'user'}, {'content': "Answer: C \nExplanation: Group B streptococci has assumed great clinical impoance as the single most common cause of neonatal meningitis in the West. Infection in the newborn is classified as the: Early onset type: occurring within a week of bih, it presents as meningitis or septicemia, and is often fatal. Infection is acquired from the maternal vagina during bih. Late-onset type: developing between the second and twelfth weeks of life, it is more often obtained from the environment and presents as septicemia. Reference: Textbook of Microbiology; Anathanarayan and paniker's; 10th edition; Page no: 218", 'role': 'assistant'}]