This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition and Health, Subject name: Social & Preventive Medicine
The limiting amino acid in wheat is 
Select and explain. 
A. Alanine & threonine, B. Lysine & threonine, C. Zero desk, D. Tyrosine & Methionine
B: Lysine & threonine
Answer: B: Lysine & threonine 
Explanation: (Lysine & threonine) (497 - Park 19th) (543-Park 20th)* WHEAT - limiting amino acid is lysine and threonine* MAIZE - Deficient in tryptophan and some strains excess of leucine* CEREALS - Deficient amino acid is lysine* RICE - Rice protein richer in lysine