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
Which of the following stain is used for staining reticulocytes 
Select and explain. 
A. Brilliant cresyl blue, B. Sudan black, C. Warthin starry, D. Hemotoxylin-eosin stain
A: Brilliant cresyl blue
Answer: A: Brilliant cresyl blue 
Explanation: The most common supravital stain is performed on reticulocytes using new methylene blue or brilliant cresyl blue. It makes it possible to see the reticulofilamentous pattern of ribosomes characteristically precipitated in these live immature red blood cells.