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: Biochemistry
[{'content': 'Antioxidant vitamin - \nSelect and explain. \nA. Vitamin A, B. Ascorbic acid, C. Vitamin E, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., All of the above o There are two types of antioxidant systems :-Enzymatic antioxidant systemThis includeCatalaseSuperoxide dismutase (SOD)Glutathione peroxidaseNon-enzymatic antioxidant systemThis is further subdivided intoVitamins : Vitamin E, Vitamin A & beta carotene. Vitamin C.Minerals : Selenium, Copper, Zinc, ManganeseTissue proteins : Transferrin, ferritin, lactoferrin, ceruloplasminAmino acids : Glutathione, Cysteine", 'role': 'assistant'}]