This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitamins and Minerals, Subject name: Biochemistry
[{'content': 'Which of the following vitamin is most potent antioxidant? \nSelect and explain. \nA. Vitamin D, B. Vitamin E, C. Vitamin K, D. Vitamin B', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B Vitamin E* Vitamins which act as anti-oxidants are: Vitamin A, C and E (tocopherol)* Beta Carotene (Vit A) is an anti-oxidant at low PO2 These antioxidants are of two types:1. Preventive antioxidants: Reduce the rate of chain initiation. Includes: Catalase, EDTA, DTPA2. Chain breaking antioxidant: Interfere with chain propagation. Includes: SOD, Vitamin E.', 'role': 'assistant'}]