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
Mycobacterium TB can be differentiated from other mycobacterium by- 
Select and explain. 
A. Production of niacin, B. arylsulphate test, C. Coagulase test, D. Bile solubility test
A: Production of niacin
Answer: A: Production of niacin 
Explanation: Ans. is 'a' i.e., Production of niacin