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
[{'content': 'The vitamin used for post-translational modification of glutamic acid to y-Carboxy-glutamate is \nSelect and explain. \nA. Vitamin D, B. Vitamin E, C. Vitamin A, D. Vitamin K', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Vitamin K', 'role': 'assistant'}]