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 clot formed after coagulation cascade is not stable unless extensive cross linking occurs. This is done by - 
Select and explain. 
A. Plasmin, B. Factor XIII, C. Thrombin, D. High molecular weight kininogen
B: Factor XIII
Answer: B: Factor XIII 
Explanation: . Factor XIII