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: Medicine
[{'content': 'Radiological features of left ventricular heart failure are all, except - \nSelect and explain. \nA. Kerly B lines, B. Cardiomegaly, C. Oligemic lung fields, D. Increased flow in upper lobe veins', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]