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
Factor-X deficiency is seen in: 
Select and explain. 
A. Hemophilia-A, B. Hemophilia-B, C. Both, D. None of the above
D: None of the above
Answer: D: None of the above 
Explanation: None of the above