This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Social & Preventive Medicine
Protein quality assessment is best done by ? 
Select and explain. 
A. NPU, B. Biological value, C. Digestibillity coefficient, D. Amino acid score
A: NPU
Answer: A: NPU 
Explanation: o Net protein utilization is considered to be most practile because it is the product of biological value and digestibility coefficient divided by 100. Ref: Park 24th edition