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: Dental
Stain used for staining fungal elements – 
Select and explain. 
A. Acid fast stain, B. Mucicarmic, C. Methenamine, D. Gram stain
C: Methenamine
Answer: C: Methenamine 
Explanation: For the demonstration of fungal elements in tissue sections following two stains are most commonly used -

i) Periodic acid Schiff (PAS)        
ii)  Methanamine silver