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': 'Which of the following is not associated with hypercalcemia? \nSelect and explain. \nA. Tumor lysis syndrome, B. Hyperparathyroidsm, C. Multiple sclerosis, D. Sarcoidosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: This is a question repeated often. Tumor lysis syndrome causes hypocalcemia. A normal serum calcium level is 8-10 mg/dL (2-2.5 mmol/L) with some interlaboratory variation in the reference range, and hypercalcemia is defined as a serum calcium level greater than 10.5 mg/dL (>2.5 mmol/L).', 'role': 'assistant'}]