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': 'Cereal protein is deficient in which amino acid \nSelect and explain. \nA. Leucine, B. Lysine, C. Phenylalanine, D. Tryptophan', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Lysine Supplementary action of proteins Cereals are deficient in essential amino acid Lysine & threonine. Pulses are deficient in essential amino acid Methionine. So if cereals are eaten with pulses, their proteins complement each other & provide a more balanced and complete protein intake.", 'role': 'assistant'}]