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: Pharmacology
Which of the following is vitamin K–dependent clotting factor? 
Select and explain. 
A. Factor VII, B. Factor I, C. Factor XI, D. Factor XII
A: Factor VII
Answer: A: Factor VII 
Explanation: Vitamin K-dependent factors are clotting factor II (prothrombin), VII, IX, and X and anti-clotting factors protein C and protein S.