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 factors are activated by vitamin K 
Select and explain. 
A. Factor II, B. Protein C, C. Protein S, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Vitamin K activates clotting factors like factor II, VII, IX and X. It also activates anti - clotting proteins like Protein C & Protein S.