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
Synthetic Orygen carrier is made up of_ 
Select and explain. 
A. Iron, B. Bronze, C. Molybdenum, D. Flurine
D: Flurine
Answer: D: Flurine 
Explanation: 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.