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': 'Clubbing of the fingers is seen in all of the following\nconditions except: \nSelect and explain. \nA. Bronchiectasis, B. Coronary artery disease, C. Lung abscess, D. Tetralogy of Fallot', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]