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
Coarctation of the aoa is common in which syndrome: 
Select and explain. 
A. Down's, B. Turner's, C. Klinefelter's, D. Noonan's
B: Turner's
Answer: B: Turner's 
Explanation: Answer is B (Turner's syndrome) Turner's syndrome is commonly associated with coarctation of aoa. Congenital Syndromes Cardiac anomaly Turner's syndrome Coarctation of Aoa Q Pulmonic stenosisQ Aoic stenosis Q Down's syndrome ASD Q -endocardial cushion type Noonan's syndrome (Nelson 6'" / 1747) Pulmonary stenosis Q ASD Hyperophic cardiomyopathy