This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bleeding Disorders, Subject name: Pathology
Factor useful for clot stabilization- 
Select and explain. 
A. X, B. XI, C. XII, D. XIII
D: XIII
Answer: D: XIII 
Explanation: Ans. is 'd' i.e., XIII Factor XIII:o It is also called fibrin stabilizing factor.o It is necessary for clot stabilization and the cross linking of the fibrin polymer in blood,o A hallmark of this rare deficiency is poor wound healing and abnormal scar formation.