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: Surgery
Post extraction bleeding in a leukaemic patient is due to: 
Select and explain. 
A. Increase in leukocytes, B. Low calcium level, C. Platelet disorder, D. Deficiency of clotting factors
C: Platelet disorder
Answer: C: Platelet disorder 
Explanation: None