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': 'Wheat is deficient in which of the following amino acid \nSelect and explain. \nA. Methionine and Lysine, B. Lysine and threonine, C. Threonine  and Methionine, D. Arginine and Lysine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cereals deficient in\xa0Lysine & threonine.\nPulses\xa0deficient in\xa0Methionine & cyteine.\nMaize\xa0deficient in tryptophan\xa0& Lysine.', 'role': 'assistant'}]