This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Proteins, Subject name: Social & Preventive Medicine
[{'content': 'Pulses are deficient in which amino acid - \nSelect and explain. \nA. Methionine, B. Lysine, C. Threonine, D. Tryptophan', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Methionine Food itemLimiting Amino Acids(s)CerealsThreonine (& Lysine)PulsesMethionine (& Cysteine)MaizeTryptophan (& Lysine)", 'role': 'assistant'}]