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
[{'content': 'Limiting amino acid in soyabean is - \nSelect and explain. \nA. Threonine, B. Lysine, C. Methionine, D. Tryptophan', 'role': 'user'}, {'content': "Answer: C \nExplanation: The limiting amino acid in soyabean is methionine.REF.PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE.Editon-21.Page no.-580", 'role': 'assistant'}]