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': "Most common cardiac anamoly associated with Noonan 's syndrome is \nSelect and explain. \nA. Aortic stenosis, B. Ventricular septal defect, C. Pulmonary stenosis, D. Atrial septal defect", 'role': 'user'}, {'content': "Answer: C \nExplanation: Most common cardiac anamoly associated with Noonan's syndrome is pulmonary stenosis.", 'role': 'assistant'}]