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': 'Excess of avidin causes deficiency of: \nSelect and explain. \nA. Folate, B. Choline, C. Vitamin B12, D. Biotin', 'role': 'user'}, {'content': "Answer: D \nExplanation: Excess consumption of raw eggs, which contains a protein 'avidin' - a biotin binding protein leads to biotin deficiency When cooked, avidin is paially denatured and its binding to biotin is reduced. So cooked egg whites are safe to consume.", 'role': 'assistant'}]