This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: vitamins, Subject name: Biochemistry
All the following clotting factors are dependent on vitamin K for their activity Except 
Select and explain. 
A. II, B. V, C. VII, D. IX
B: V
Answer: B: V 
Explanation: Factors VII, IX, and X, and proteins C and S, are dependent on Vitamin K. Harper 30th edition pg:555