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': 'A pregnant lady with aids complains of diahorrea and stool examination shows acid fast positive cysts. She has infection with: \nSelect and explain. \nA. Isospora, B. Giardia, C. Entameob a, D. Microspora', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Isospora', 'role': 'assistant'}]