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: Gynaecology & Obstetrics
[{'content': 'All of the following are features of Turner syndrome, EXCEPT: March 2013 \nSelect and explain. \nA. Streaky gonads, B. Webbed neck, C. Coarctation of aoa, D. Mental retardation', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D i.e. Mental retardation', 'role': 'assistant'}]