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: Pathology
Amyloid is stained with:September 2009, March 2013 
Select and explain. 
A. Lugol's iodine, B. Methyl violet, C. Congo red, D. Sudan black
C: Congo red
Answer: C: Congo red 
Explanation: Ans. C: Congo red