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': 'HIV pt with malabsotion, fever, chronic diarrhoea, with acid fast positive organism. What is the causative agent ? \nSelect and explain. \nA. Giardia, B. Microsporidia, C. Isospora, D. E. histolytica', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Isospora Protozoa commonly causing diarrhea in HIV patients and have acid fast oocyst are cryptosporidia and isospora belli.", 'role': 'assistant'}]