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
Pulses are deficient in which amino acid - 
Select and explain. 
A. Methionine, B. Lysine, C. Threonine, D. Tryptophan
A: Methionine
Answer: A: Methionine 
Explanation: Ans. is 'a' i.e., Methionine Food itemLimiting Amino Acids(s)CerealsThreonine (& Lysine)PulsesMethionine (& Cysteine)MaizeTryptophan (& Lysine)