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 Calcium with Decreased Phosphate levels are seen in: \nSelect and explain. \nA. Primary hyperparathyroidism, B. Secondary hyperparathyroidism due to Vitamin D deficiency, C. Malignancy with lytic bone lesions, D. Osteoporosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Primary Hyperparathyroidism): Serum Calcium with Decreased Serum Phosphate levels are typical of Primary Hyperparathyroidism', 'role': 'assistant'}]