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': 'Nephrocalcinosis is a feature of AJE - \nSelect and explain. \nA. Primary hyperparathyroidism, B. Medullary sponge kidney, C. Vitamin D intoxication, D. Pseudo hypoparathyroidism', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]