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': 'Lysine is not present in - \nSelect and explain. \nA. Wheat, B. Rice, C. Bengal gram, D. red gram', 'role': 'user'}, {'content': 'Answer: A \nExplanation: <p> Wheat :- Next to rice, wheat is the most impoant cereal. Protein content- 9-16%. Limiting amino acids: Lysine and threonine. The wheat grain is much less subjected to loss of essential nutrients during processing than rice. Whole grain wheat flour is richer source of vit B than refined white flour. Rice :- Rice proteins are rich in lysine. Also good source of thiamine. Devoid of vitamins A,D and C. Pulses are also rich in lysine. But they are deficient in methionine and cysteine. {Reference: Park&;s textbook of community medicine, 23 rd edition, pg no. 628,627}', 'role': 'assistant'}]