This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: DNB 2018, Subject name: Biochemistry
[{'content': 'Cereal are deficient in which amino acid: \nSelect and explain. \nA. Leucine, B. Lysine, C. Phenylalanine, D. Tryptophan', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cereal are deficient in lysine and threonine Pulses are deficient in methionine', 'role': 'assistant'}]