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: Pharmacology
[{'content': 'Adequacy of D-penicillamine treatment in wilson is monitored by measuring the: \nSelect and explain. \nA. 24 hour urinary copper, B. Serum ceruloplasmin, C. Disappearance of KF ring, D. Serum copper level in the fasting state', 'role': 'user'}, {'content': 'Answer: A \nExplanation: D-Penicillamine treatment in wilson disease: Adequacy of treatment is monitored by measuring 24-hour urinary copper excretion while on treatment. The most impoant sign of efficacy is a maintained clinical and lab improvement. Serum ceruloplasmin decrease after initiation of treatment. Ref: Journal of Hepatology 2012 vol. 56 / 671-685.', 'role': 'assistant'}]