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': 'Highest biological value of protein is seen in - \nSelect and explain. \nA. Eggs, B. Fish, C. Soyabean, D. Gram', 'role': 'user'}, {'content': "Answer: A \nExplanation: Net protein utilization which combines in a single value the biological value and digestibility is 100 for egg compared to 80 for meat and 75 for milk Ref: P.687 25 th edition Park's Textbook of Preventive and Social Medicine", 'role': 'assistant'}]