This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Medicine
[{'content': 'Which of the following most strongly suggests the diagnosis of primary hyperparathyrodism? \nSelect and explain. \nA. Serum acid phosphatase above 120IU/L, B. Serum calcium above 11 mg/dL, C. Urinary calcium below 100 mg/day, D. Serum alkaline phosphatase abve 120 lU/L', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Diagnostic criteria for primary hyperparathyroidism and its surgery Ref - semantischolar.org', 'role': 'assistant'}]