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 deposits stain positively with all of the following except: 
Select and explain. 
A. Congo-red, B. Methenamine silver, C. Crystal violet, D. Thioflavin T
B: Methenamine silver
Answer: B: Methenamine silver 
Explanation: Staining Characteristics of Amyloid