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: Pathology
[{'content': "Normal serum, Ca and alkaline PO4 are in \nSelect and explain. \nA. Cherubisnri, B. Hypothyroidism, C. Hyperparathyroidism, D. Paget's disease", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]