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': "Causes of cynosis -a) TOFb) PDAc) Tricuspid atresiad) Eisenmenger's complexe) TGA \nSelect and explain. \nA. bce, B. acde, C. abcd, D. abde", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]