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 vitamin is also antioxidant \nSelect and explain. \nA. Vitamin C, B. Vitamin D, C. Vitamin B3, D. Vitamin B2', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Antioxidant vitamins are: Vitamin C, Vitamin E, Beta Carotene.', 'role': 'assistant'}]