This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory, Subject name: Medicine
[{'content': 'This patient presented following a high-speed motor vehicle crash. Which structure has been disrupted? \nSelect and explain. \nA. Aorta, B. Diaphragm, C. Esophagus, D. Myocardium', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer B. DiaphragmThe elevated right hemidiaphragm suggests traumatic diaphragmatic rupture. The other listed structures appear to be intact. A computed tomographic scan confirmed the diaphragmatic rupture and showed that the dome of the liver had herniated into the right hemithorax.', 'role': 'assistant'}]