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
The following laboratory determinants is abnormally prolonged in ITP - 
Select and explain. 
A. APTT, B. Prothrombin time, C. Bleeding time, D. Clotting time
C: Bleeding time
Answer: C: Bleeding time 
Explanation: None