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
The causative agent of bacterial meningitis in a 1-year-old child is: 
Select and explain. 
A. Pneumococcus, B. H. influenza, C. Neisseria meningitidis, D. Listeria
B: H. influenza
Answer: B: H. influenza 
Explanation: 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