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': "Kerley B lines' in the chest X-ray of a patient is a radiological feature of - \nSelect and explain. \nA. Respiratory failure, B. Heart failure, C. Renal failure, D. Liver failure", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]