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': 'Which of the following act as antioxidants: \nSelect and explain. \nA. Glutathione peroxidase, B. Vit. C, C. Selenium, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: All Correct - A,B & C', 'role': 'assistant'}]