In the following cytochemistry stainings,which one is the most important in clini-cal to diagnose acute Ieukemia

• A、Peroxidase staining(POX)
• B、Ferric staining
• C、Stairung for glycogen(periodic acid-schiff,PAS)
• D、Neutrophil alkaline phosphatase staining(NAP)
• E、None of above