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
The commonly used stain in the study of fungal infections are 
Select and explain. 
A. a)	Gomori methanamine silver, B. b)	PAS, C. c)	H & E, D. All the above
D: All the above
Answer: D: All the above 
Explanation: None