This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and health, Subject name: Social & Preventive Medicine
[{'content': 'Rice is poor in all except \nSelect and explain. \nA. Calcium, B. Iron, C. Vitamin A, D, C, D. Lysine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Rice is a poor source of Thiamine, Calcium, Iron and Vitamins A, D, C Protein content of rice varies from 6-9% Rice proteins are better than other cereal proteins as dry rice is richer in lysine Rice is staple food of >50% population globally Ref: Park 25th edition Pgno : 665', 'role': 'assistant'}]