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: Medicine
[{'content': "Recommended anticopper drug for Wilson's disease in paediatric patients is: \nSelect and explain. \nA. Trientine, B. Zinc, C. Tetrathiomolybdate, D. d-penicillamine", 'role': 'user'}, {'content': "Answer: B \nExplanation: Recommended Anticopper Drugs for Wilson's Disease: Disease status DOC Hepatitis/cirrhosis without decompensation Zinc Mild hepatic decompensation Trientine and Zinc Moderate hepatic decompensation Trientine and Zinc Severe hepatic decompensation Liver transplantation Pediatric Zinc Pregnant Zinc Reference: Harrisons Principles of Internal Medicine, 18th Edition, Page 3189", 'role': 'assistant'}]