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': 'Soya bean is rich in - \nSelect and explain. \nA. Lysine, B. Aspaic acid, C. Glycine, D. Alanine', 'role': 'user'}, {'content': "Answer: A \nExplanation: Pulses are rich in lysine. They are poor in methionine and to a lesser extent cysteine. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 580", 'role': 'assistant'}]