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
A 14 year girl presented with absent thelarche.On examination uterus was present. Investigations showed high FSH. karyotype is XY.What is the probable diagnosis? 
Select and explain. 
A. Gonadal dysgenesis, B. Kallman syndrome, C. Androgen insensitivity syndrome, D. Adrenal hyperplasia
A: Gonadal dysgenesis
Answer: A: Gonadal dysgenesis 
Explanation: Ans. A. Gonadal dysgenesisRef: Clinical Gynecologic Endocrinoktgt Infeility, 8" ed.Gonadal dysgenesis (Swyer Syndrome):Uncommon form of gonadal dysgenesis, characterized by a 46,XY karyotype.