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 required for post translational modification of coagulants is 
Select and explain. 
A. Vitamin A, B. Vitamin C, C. Vitamin B6, D. Vitamin K
D: Vitamin K
Answer: D: Vitamin K 
Explanation: None