This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
The stain used for demonstrating Auer rods in blasts is - 
Select and explain. 
A. Periodic Acid Schiff(PAS, B. Myeloperoxidase, C. Leucocyte alkaline phosphatase, D. Non-specific esterase
B: Myeloperoxidase
Answer: B: Myeloperoxidase 
Explanation: The cytochemical stain, Myeloperoxidase is positive in immature myeloid cells containing granules and Auer rods Reference textbook of Pathology 7th edition author Harsha Mohan page number 342