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': 'The typical Chest X-ray findings due to interstitial edema in left ventricular failure is: \nSelect and explain. \nA. Cardiomegaly, B. Kerley lines, C. Upper lobe blood diversion, D. Prominent right descending pulmonary aery', 'role': 'user'}, {'content': "Answer: B \nExplanation: Chest X-ray Features of Left ventricular failure: Cardiomegaly Kerley lines Prominent upper lobe veins Bat's wings shadow Pleural effusion Kerley B line is due to interstitial oedema. Prominent right descending pulmonary aery is seen in acute pulmonary embolism. Ref: AJR Am J R 1976 Jun;126:1147-5.", 'role': 'assistant'}]