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: Medicine
Clinical Haemophilia is characterized by ?
(BT-Bleeding
Time, CT Clotting Time, PT — Prothrombin time, PTT
Partial thromboplastin time): 
Select and explain. 
A. Prolonged PT and normal BT, B. Prolonged BT, PT and PTT, C. Normal BT and PT and prolonged PTT, D. Prolonged BT and normal CT, PT and PTT
C: Normal BT and PT and prolonged PTT
Answer: C: Normal BT and PT and prolonged PTT 
Explanation: None