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': 'Which of the following is used as a reference protein for assessing protein quality? \nSelect and explain. \nA. Fish, B. Egg, C. Pulses, D. Chicken', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Quality of protein is assessed with relation to egg as reference protein. Ref: Park 21st edition, page 586.', 'role': 'assistant'}]