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
The best screening test for hemophilia ? 
Select and explain. 
A. PT, B. CT, C. PTT, D. BT
C: PTT
Answer: C: PTT 
Explanation: Ans. is 'c' i.e., PTT