What Is the Principle of the Peroxidase Staining Procedure

What is the principle of the peroxidase staining procedure?

A) In the presence of lactate dehydrogenase (LDH) , the enzyme peroxidase oxidizes the substrate to a red-brown color.
B) In the presence of KOH, the enzyme peroxidase oxidizes the substrate to a red-brown color.
C) In the presence of hydrogen peroxide, the enzyme peroxidase oxidizes the substrate to a red-brown color.
D) In the presence of hydrogen peroxide, the enzyme peroxidase oxidizes the substrate to a blue-green color.
E) None of the above.