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: Forensic Medicine
Chelating agent used in mercury poisoning is 
Select and explain. 
A. Calcium disodium edetate, B. Desferrioxamine, C. Penicillamine, D. BAL
D: BAL
Answer: D: BAL 
Explanation: Ans. is 'd' i.e., BAL