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 trace element has Vitamin E sparing effect ? \nSelect and explain. \nA. Copper, B. Iron, C. Magnesium, D. Selenium', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., SeleniumSelenium prevents lipid peroxidation and offers protection against free radicals.Vitamin E also has the same effect (antioxidant) though by a different mechanism.Thus selenium and vitamin E supplement each other.Availability of vitamin E reduces the selenium requirment and conversely, in selenium-deficient tissue, vitamin E is depleted.", 'role': 'assistant'}]