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
B: SOD (superoxide dismutase)
Answer: B: SOD (superoxide dismutase) 
Explanation: Within the phagocytes, the following reaction takes place:

The initiating enzyme for this process is NADPH oxidase (also called respiratory burst oxidase).
Glutathione peroxidase, glutathione reductase and superoxide dismutase are examples of anti-oxidants. They reduce free radical formation.