This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'The most common organism amongst the following that causes acute meningitis in an AIDS patients is - \nSelect and explain. \nA. Streptococcus pneumoniae, B. Streptococcus agalactiae, C. Cryptococcus neoformans, D. Listeria monocytogenes', 'role': 'user'}, {'content': 'Answer: C \nExplanation: the typical CNS oppounistic infections are toxoplasmosis and cryptococcosis REF:ANANTHANARAYANAN TEXT BOOK OF MICROBIOLOGY 9EDITION PGNO.576', 'role': 'assistant'}]