This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: vitamins, Subject name: Biochemistry
[{'content': 'Which of the following lipid soluble vitamin acts as an antioxidant? \nSelect and explain. \nA. Vitamin D, B. Vitamin E, C. Vitamin K, D. Vitamin C', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Vitamin Functions Deficiency Disease E Antioxidant, especially in cell membranes roles in cell signaling Extremely rare--serious neurologic dysfunction Reference: Harper; 30th edition; Page no: 550', 'role': 'assistant'}]