This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Radiology
[{'content': 'Which modality is the mainstay in trauma imaging? \nSelect and explain. \nA. Plain radiograph, B. CT, C. MRI, D. Radionuclide imaging', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans AThough not sensitive for subtle undisplaced or early fractures, plain radiographs even today due to their widespread availability, less radiation (as compared to CT scan), mobility (can be taken in any OPD/IPD/ICU) remain the mainstay of trauma imaging.', 'role': 'assistant'}]