This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood: Hemostasis and Blood Coagulation, Subject name: Physiology
Half life of prothrombin - 
Select and explain. 
A. 24 hours, B. 60 hours, C. 5 days, D. 10 days
B: 60 hours
Answer: B: 60 hours 
Explanation: Ans. is 'b' i.e., 60 hours o Half life of various clotting factors (in hours) :-# Firinogen-100-150# Factor III-6# Factor X- 45-52# Prothrombin - 60# Factor VIII -8-12# Factor XI - 48-84# Factor V -24# Factor IX - 24# Factor XII - 150 # WVF-30