This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexuality and intersexuality, Subject name: Gynaecology & Obstetrics
[{'content': 'C/F of Turner&;s syndrome: \nSelect and explain. \nA. Secondary amenorrhea, B. Edema of hands and feet, C. XY genotype, D. Mental retardation common', 'role': 'user'}, {'content': "Answer: B \nExplanation: Turner's syndrome 45,XO genotype sho strature neck is sho and webbed shield chest,high palate,low set ears lymphoedema of extremities at bih SHAW'S TEXTBOOK OF GYNAECOLOGY,Pg no:111,15th edition", 'role': 'assistant'}]