This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
[{'content': 'The causative agent of bacterial meningitis in a 1-year-old child is: \nSelect and explain. \nA. Pneumococcus, B. H. influenza, C. Neisseria meningitidis, D. Listeria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B. H. influenzaAcute Bacterial MeningitisAgeCausative agent<2 monthsListeria monocytogenes2-3 monthsPneumococcus3 months-2 yearsWorld: PneumococcusIndia: H. influenzae2-12 yearsWorld: PneumococcusIndia: N. meningitidis>12 yearsPneumococcus', 'role': 'assistant'}]