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': 'MC cause of death in adult with PDA is- \nSelect and explain. \nA. CCF, B. Infective endocarditis, C. Rupture, D. Embolism', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]