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: Biochemistry
Vitamin K dependent clotting factor is 
Select and explain. 
A. VII, B. I, C. XI, D. XII
A: VII
Answer: A: VII 
Explanation: Vitamin K dependent clotting factors (VKCF) are clotting factors II (prothrombin), VII (Proconvertin), IX (Christmas factor), X (Stuart Prover Factor), protein C, protein S and protein Z.