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
Amino acid deficient in both Wheat and Maize ? 
Select and explain. 
A. Lysine, B. Threonine, C. Tryptophan, D. Methionine
A: Lysine
Answer: A: Lysine 
Explanation: Ans. is 'a' i.e., Lysine Wheat Next to rice, wheat is the most impoant cereal. The limiting amino acids in wheat proteins are lysine and threonine.