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
A9 year old boy with elevation in both PT and APTT.What is the diagnosis - 
Select and explain. 
A. Defect in extrinsic pathway, B. Defect in intrinsic pathway, C. Platelet function defect, D. Defect in common pathway
D: Defect in common pathway
Answer: D: Defect in common pathway 
Explanation: None