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: Biochemistry
[{'content': 'During phagocytosis, the metabolic process called\nrespiratory burst involves the activation of: \nSelect and explain. \nA. Oxidase, B. Oxidase, C. Peroxidase, D. Dehydrogenase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]