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: Biochemistry
[{'content': 'Limiting amino acid in legumes ? \nSelect and explain. \nA. Lysine, B. Methionine, C. Alanine, D. Tryptophan', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is b, i.e., MethionineFood itemlimiting amino acidLegumesMethionine (also leucine & threonine)CerealsThreonine (also lysine)PulsesMethionine (also cysteine)MaizeTryptophan (also lysine)', 'role': 'assistant'}]