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': 'About Soyabean true - \nSelect and explain. \nA. Protein 40%, B. Minerals 8%, C. Digestibility coefficient 75%, D. Highest quality protein amongst vegetarian food', 'role': 'user'}, {'content': "Answer: A \nExplanation: Soya beans contain 40percent of protein,20percent of fat, 4percent minerals. REF. PARK'S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO-628", 'role': 'assistant'}]