This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Stain that is usedto detect myelin 
Select and explain. 
A. Luxol fast blue, B. Methylene blue, C. Both, D. None
A: Luxol fast blue
Answer: A: Luxol fast blue 
Explanation: Luxol blue is used to stain myelin sheath Ref:Guyton and Hall textbook of medical physiology 12th edition,page number: 72,73