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': 'Noonan syndrome is characterized  by all except \nSelect and explain. \nA. Hypertrophic cardiomyopathy, B. Dysplastic pulmonary stenosis, C. Pectus excavatum, D. Coarctation of aorta', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Coarctation\xa0 of aorta\xa0 is not the cardiovascular manifestation\xa0 in Noonan syndrome.', 'role': 'assistant'}]