This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
[{'content': 'Hypercalcemia is diagnosed by \nSelect and explain. \nA. Ionised calcium level, B. Serum calcium, C. Serum phosphate, D. Urinary calcium concentration', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Serum calcium # Approach to medical treatment of hypercalcemia varies with its severity> Mild hypercalcemia,<3.0 mmol/L (12 mg/dL), can be managed by hydration.> More severe hypercalcemia must be managed aggressively;', 'role': 'assistant'}]