This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitamins, Subject name: Social & Preventive Medicine
[{'content': 'Which of the following vitamin is not an antioxidant \nSelect and explain. \nA. Vitamin A, B. Vitamin B, C. Vitamin C, D. Vitamin E', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Vit BRef: K. Park 23rded. 1626* Antioxidants are substances which are both nutrients and non-nutrients.* These anti-oxidants reduce the toxic effects of reactive oxygen species and nitrogen species which are generated during physiological or pathological conditions and result in oxidant damage* Vitamins which acts as antioxidants are remembered as ACE: vitamin A, C and E* Other vitamins which acts as anti-oxidants are: Selenium, Glutathione* Non-nutrient products that also act as anti-oxidants are: Plant phenols, Flavonoids, Coumarins, caffeic, benzyl isothiocyanates, gallic and ellagic acid.* Vitamin B is not an anti-oxidant.', 'role': 'assistant'}]