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': 'Kerley lines are seen in – a) Pleural effusionb) Mitral stenosisc) Pericardial effusiond) Interstitial edemae) Lymphangitis carcinomatosis \nSelect and explain. \nA. bde, B. ade, C. ace, D. bce', 'role': 'user'}, {'content': "Answer: A \nExplanation: Mitral stenosis, interstitial edema due to pulmonary hypertension and lymphangitis carcinomatosis can cause Kerley `B' lines.", 'role': 'assistant'}]