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': 'Glutathion synthetase requires ? \nSelect and explain. \nA. Copper, B. Selenium, C. Magnesium, D. Iron', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Magnesium RememberGlutathione synthetase requires --* MagnesiumGlutathione peroxidase contains -> Selenium', 'role': 'assistant'}]