This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Protozoa, Subject name: Microbiology
[{'content': 'HTV 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 Common parasitic infections causing diarrhoea in HIV patientIsospora belliCryptosporidiumMicrosporidiaNow the list of Acid fast parasitesOocyst of CryptosporidiumOocyst of CyclosporaOocyst of IsosporaEggs of Taenia saginataAlso knowOther acid fast organisms BacteriaMycobacteriumNocardiaRhodococcusSmegma bacilliLegionella micdadei OthersBacterial sporesSpermatic head", 'role': 'assistant'}]