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
Persistent diarrhoea in AIDS is caused byA/E ? 
Select and explain. 
A. Microspora, B. Cryptococcus, C. Cryptosporidia, D. Isospora belli
B: Cryptococcus
Answer: B: Cryptococcus 
Explanation: Ans. is 'b' i.e., Cryptococcus and