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': 'A 15 year old child has developed dystonia and poor school grades. Slit examination is shown below. Which is the initial investigation recommended for the patient ? \nSelect and explain. \nA. Serum ceruloplasmin, B. Serum copper, C. 24 hour urinary copper, D. Liver biopsy', 'role': 'user'}, {'content': 'Answer: C \nExplanation: KF Ring can be seen in the image which is seen in Wilson disease Screening test:- 24 hours urinary copper Conformational:- Biopsy. Rx: Trientine- copper chelator Penicillamine- also chelator but less used due to nephrotic side effect. Zinc- is competitive inhibitor of copper in absorption of gut. Zinc acetateisDOCfor Wilson disease.', 'role': 'assistant'}]