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': 'Which of the following conditions most rapidly produce functional deficiency of vitamin k \nSelect and explain. \nA. Premature delivery of the baby, B. Pure vegan diet, C. Broad spectrum antibiotics consumption, D. Warfarin therapy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Warfarin prevents the recycling of vitamin K by blocking the activity of Vitamin K epoxide reductase, thus creating a functional vitamin K deficiency.', 'role': 'assistant'}]