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: Social & Preventive Medicine
[{'content': 'A person consumes diet having only pulses on daily basis. Pulses are deficient in which amino acid: \nSelect and explain. \nA. Lysine, B. Methionine, C. Leucine, D. Arginine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Methionine', 'role': 'assistant'}]