This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitamins and Minerals, Subject name: Biochemistry
[{'content': 'Which of the following is the synthetic vitamer of vitamin K? \nSelect and explain. \nA. Phylloquinone, B. Menaquinone, C. Menadione, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Vitamers are different forms of vitamins. Vitamin K has three different vitamers as:', 'role': 'assistant'}]