Which of the Following Pairs is Mismatched

Question

Which of the following pairs is mismatched?
A)nigrosin - negative stain
B)methylene blue - simple stain
C)acidic dye - capsule stain
D)basic dye - negative stain
E)crystal violet - simple stain

Accepted Answer

Negative staining typically uses acidic dyes, not basic dyes, because it relies on the dye not penetrating the cells but staining the background instead.