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': 'Best quality proteins are found in highest quantities in - \nSelect and explain. \nA. Rice, B. Wheat, C. Ragi, D. Bajra', 'role': 'user'}, {'content': "Answer: A \nExplanation: Cereals include rice and wheat while Bajra and ragi are included in millets. The protein content of rice varies from 6-9%.They are richer in lysine than the other cereal proteins, and hence for this reason, rice protein is considered to be of better quality. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 579)", 'role': 'assistant'}]