This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Pathology
Which of the following is a negative stain- 
Select and explain. 
A. Negrosin, B. Fonatana, C. ZN stain, D. Albe stain
A: Negrosin
Answer: A: Negrosin 
Explanation: list of negative stains: Nigrosin (a black synthetic dye) or India ink (an aqueous suspension of carbon paicles) Phosphotungstic acid is a common negative stain for viruses, nerves, polysaccharides, and other biological tissue materials.