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': 'All the following are Acid - fast except \nSelect and explain. \nA. M.TB, B. M.Leprae, C. Isospora, D. M.Avium complex', 'role': 'user'}, {'content': 'Answer: D \nExplanation: M.TB, M.leprae, Isospora cyclospora & Nocardia are acid fast.', 'role': 'assistant'}]