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
Which of the following is used as a reference protein for assessing protein quality? 
Select and explain. 
A. Fish, B. Egg, C. Pulses, D. Chicken
B: Egg
Answer: B: Egg 
Explanation: Quality of protein is assessed with relation to egg as reference protein. Ref: Park 21st edition, page 586.