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: Medicine
[{'content': 'Egg is a poor source of \nSelect and explain. \nA. Vitamin A, B. Vitamin B12, C. Vitamin C, D. Vitamin E', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Egg is a poor source of\xa0Vitamin C and carbohydrates.', 'role': 'assistant'}]