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': 'Synthetic Orygen carrier is made up of_ \nSelect and explain. \nA. Iron, B. Bronze, C. Molybdenum, D. Flurine', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., FlurineBlood doping is a form of fraudulent increase in the oxygen carrying capacity of a person, widely used to improve the aerobic capacity of athletes.", 'role': 'assistant'}]