This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: RBC Development and Classification of Anemias, Subject name: Pathology
[{'content': 'Reticulocytes are stained with: \nSelect and explain. \nA. Methyl violet, B. Brilliant Cresyl blue, C. Sudan black, D. Indigo carmine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: - Reticulocytes are stained in living state in vitro so it is called as supravital staining. - Dyes like brilliant cresyl blue and new methylene blue (Best stain) are used normally', 'role': 'assistant'}]