This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chelating Agent, Subject name: Pharmacology
[{'content': 'Which of the following is iron chelator: \nSelect and explain. \nA. Desferrioxamine, B. EDTA, C. BAL, D. Penicillamine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. DesferrioxamineEDTA is used for Manganese, iron, lead, bismuth. BAL is used for bismuth arsenic and lead. Penicillamine is used for copper poisoning. Dessferrioxime is iron chelator.', 'role': 'assistant'}]