This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
A patient with HIV has diarrhoea with AFB (+)ve organism in stool. The most likely organism is - 
Select and explain. 
A. Mycobacterium avium intracellulare, B. Mycobacterium TB, C. Mycobacterium leprae, D. Mycoplasma
A: Mycobacterium avium intracellulare
Answer: A: Mycobacterium avium intracellulare 
Explanation: respiratory infection (TB) most redponsible organism is M.avium intracrllularlae REF:MICROBIOLOGY ANANTHA NARAYANAN NINTH EDITION PAGE.576