This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Which of the following is a peroxisomal free radical scavenger \nSelect and explain. \nA. Superoxide dismutase, B. Glutathione peroxidase, C. Catalase, D. All the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: ref Robbins 9/e p48', 'role': 'assistant'}]