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
Methionine is a limiting amino acid in: 
Select and explain. 
A. Cereals, B. Maize, C. Wheat, D. Pulses
D: Pulses
Answer: D: Pulses 
Explanation: Ans. (d) PulsesRef: K. Park 23rded. /628* Pulses contain 20-25% of protein, which is considered more than eggs, fish, meat products. However the quality of protein in pulses is inferior to that of meat products.* Soyabean contains 40% of protein* Pulses protein are poor in methionine and to a lesser extent in cysteine.* Amino acid rich in pulses: LysineAlso KnowFOOD PRODUCTS AND THEIR LIMITING AMINO ACIDFood ItemLimiting Amino AcidsPulsesMethionine & CysteineCerealsThreonine & LysineMaizeTryptophan & Lysine