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': 'Features of Mitral stenosis on X-ray are all EXCEPT: \nSelect and explain. \nA. Double contour of right border, B. Lifting of left mainbronchus, C. Splaying of carinal angle, D. Lower lobe prominence of veins', 'role': 'user'}, {'content': "Answer: D \nExplanation: Lower lobe prominence of veins REF: Sutton's radiology 7th edition page 294 Features of mitral stenosis on X ray: Straightening of hea border (earliest sign ) Lifting of left bronchus Posterior displacement of esophagus Double atrial shadow Alveolar edema Kerly B lines Pulmonary hemosiderosis Cephalisation of upper lobe vessels Moustache sign: Enlargement of main pulmonary aery and periferal pruning", 'role': 'assistant'}]