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. Methionine, B. Tryptophan, C. Lysine, D. Isoleucine
C: Lysine
Answer: C: Lysine 
Explanation: The limiting amino acid in wheat is lysine and threonine. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 579)