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 helps in generating reactive O2 intermediates in the neutrophils 
Select and explain. 
A. NADPH - Oxidase, B. SOD (Superoxide dismutase), C. Catalase, D. Glutathione peroxidase
A: NADPH - Oxidase
Answer: A: NADPH - Oxidase 
Explanation: Within the phagocytes, the initiating enzymes for this process in NADDH Oxidase (also called respiratory burst Oxidase)
Glutathione peroxidase, glutathione reductase and superoxide alimutase are examples of anti oxidants. They reduce free radical formation.