This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology, Subject name: Microbiology
[{'content': 'Primary amoebic meningitis caused by: \nSelect and explain. \nA. Naegleri fowleri, B. E. histolytic, C. E. coli, D. B. coli', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Naegleri fowleriPathogenic free living Amoeba (BAN)1. Naegieria fowleri - Acute and fulminating primary amoebic meningoencephalitis (PAM).2. Acanthamoeba - Ulcerative keratitis and granulomatous amoebic encephalitis (GAE).3. Balamuthia (Rare) - Chronic granulomatous amoebic encephalitis.", 'role': 'assistant'}]