This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'The most common organism amongst the following that causes acute meningitis in an AIDS patient is ? \nSelect and explain. \nA. Streptococcus pneumoniae, B. Streptococcus agalactiae, C. Cryptococcus neoformans, D. Listeria monocytogenes', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is c' i.e., Cryptococcus neoformans C. neoformans is the leading infections cause of meningitis in patients with AIDS.", 'role': 'assistant'}]