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': "All are features of Turner's syndrome except : \nSelect and explain. \nA. Karyotype is 46 XO, B. Underdeveloped uterus, C. Normal secondary sexual characters, D. Primary amenorrhoea", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Turner&;s syndrome Karyotype is 45,XO Female phenotype sho strature,trunk is muscular neck is webbed and sho cubitus valgus breasts are not developed pubic and axillary hair is scanty or absent underdeveloped vagina and uterus shield chest,high arched palate,low set ears SHAW&;S TEXTBOOK OF GYNAECOLOGY,Pg no:111,15th edition', 'role': 'assistant'}]