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: Radiology
[{'content': 'Best investigation to detect rupture of breast implant is \nSelect and explain. \nA. USG, B. Mammography, C. MRI, D. X - ray', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Linguine sign is seen in ruptured breast implant.', 'role': 'assistant'}]