This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver, Subject name: Medicine
[{'content': 'In Wilson disease, chelation is done by: \nSelect and explain. \nA. Iron, B. Zinc, C. Copper, D. Selenium', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 2Ans. (b) ZincRef: Harrison 18th edition, Chapter 360:Disease statusFirst choiceInitial hepatic Hepatitis or cirrhosis without decompositionZincaHepatic decompensation MildTrientineb and zincModerateTrientine and zincSevereHepatic transplantationInitial neurologic /psychiatricTetrathiomolybdatec and zincMaintenanceZinc', 'role': 'assistant'}]