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 most common organism causing meningitis is - \nSelect and explain. \nA. Staphylococcus, B. Streptococcus, C. Mycoplasma, D. Pneumococcus', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'D' i.e., Pneumococcus o Two most common organisms causing meningitis in adults are pneumococci and meningococci. o Group B streptococci is the most common cause of meningitis in neonates followed by E.coli.", 'role': 'assistant'}]