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': 'Increased Serum Calcium and Decreased Serum PO4 may be seen in all of the following, except: \nSelect and explain. \nA. Primary hyperparathyroidism, B. Hypercalcemia of Malignancy, C. Vitamin D Intoxication, D. Familial benign Hypercalcemia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer is C (Vitamin D intoxication): Vitamin D Intoxication is not associated with decreased serum PO4 levels (Associated with normal or increased serum PO4) Primary Hyperparathyroidism, Familial Benign Hypercalcemia and hypercalcemia of malignancy may all be associated with increased serum calcium and decreased serum PO4. Vitamin D Intoxication is associated with increased serum calcium with normal or increased serum PO4', 'role': 'assistant'}]