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': 'Radiological findings of  Congestive Cardiac failure except: \nSelect and explain. \nA. Prominent Lower lobe vessels, B. Kerley B Lines, C. Cardiomegaly, D. Perihilar haze', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Prominent upper lobe vessels - due to diversion of blood to upper lobe veins.', 'role': 'assistant'}]