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: Pathology
Which of the following karyotype is seen in a nineteen year old female with sho stature, wide spread nipples and primary amenorrhoea? 
Select and explain. 
A. 47, XX+18, B. 46, XXY, C. 47, XXY, D. 45 X
D: 45 X
Answer: D: 45 X 
Explanation: Patient described in the question is most likely a case of Turner's syndrome as indicated by the clinical features. Turner's syndrome results from complete or paial loss of one X chromosome resulting in the karyotype 45X. It is primarily characterized by hypogonadism in phenotypic females. Ref: Robbins Pathologic Basis of Disease, 6th Edition, Page 174-5.