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': "Wilson's disease is characterized by - \nSelect and explain. \nA. Low serum ceruloplasmin and low urinary copper, B. Low serum ceruloplasmin and high urinary copper, C. High serum ceruloplasmin and low urinary copper, D. High serum ceruloplasmin and high urinary copper", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]