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: Pediatrics
[{'content': "Lutembacher's syndrome comprises of ? \nSelect and explain. \nA. Ventricular septal defect with aoic stenosis, B. Ruptured sinus of valsalva aneurysm, C. Atrial septal defect with mitral stenosis, D. Complete common atrioventricular canal", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Atrial septal defect with mitral stenosis", 'role': 'assistant'}]