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 tuberculosis is best demonstrated by 
Select and explain. 
A. Gram's stain, B. H & E stain, C. Ziehl-Neelsen stain, D. PAS stain
C: Ziehl-Neelsen stain
Answer: C: Ziehl-Neelsen stain 
Explanation: None