This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cytogenetic Disorders, Subject name: Pathology
Klinefelter no of chromosomes- 
Select and explain. 
A. 47, B. 46, C. 45, D. 44
A: 47
Answer: A: 47 
Explanation: Ans. is 'a' i.e., 47 o In Klinefelter's syndrome there is extra X or Y chromosome to a male karyoty pe. Thus there are 47 chromosome.