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
The action of vitamin K in formation of clotting factor is through: 
Select and explain. 
A. Post transcription, B. Post translation, C. Golgi complex, D. Endoplasmic reticulum
B: Post translation
Answer: B: Post translation 
Explanation: None