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
Net Protein utilization of fish is- 
Select and explain. 
A. 57%, B. 67%, C. 77%, D. 87%
C: 77%
Answer: C: 77% 
Explanation: Ans. is 'c' i.e., 77% Egg is ideal protein because it has high biological efficiency and NPU : NPU for egg : 100 Fish : 77 Wheat : 51 NPU for meat : 80 Rice : 65 Pulses : 45-50 NPU for milk : 75 Soyabean 55