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': 'Localisation of parathyroids in hyperparathyroidism is done best with \nSelect and explain. \nA. X ray neck, B. USG neck, C. I131 scan, D. Technetium 99 labelled sestamibi scan', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]