This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, 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: None', 'role': 'assistant'}]