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: Pediatrics
A nineteen year old female with short stature, wide spread nipples and primary amenorrhoea most likely has karyotype of – 
Select and explain. 
A. 47, XX + 18, B. 46XXXY, C. 47, XXY, D. 45 XO
D: 45 XO
Answer: D: 45 XO 
Explanation: None