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': 'All of the following are features of splenic rupture on plain X-ra3, abdomen except: \nSelect and explain. \nA. Obliteration of psoas shadow, B. Obliteration of splenic outline, C. Obliteration of colonic air hubble, D. Elevation of left hemidiaphragm', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Obliteration of colonic air hubble', 'role': 'assistant'}]