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': 'All are true about Net protein utilization (NPU) except \nSelect and explain. \nA. Defined as Nitrogen retained by Nitrogen consumed X 100, B. 1 gram protein is equivalent to 1 gram Nitrogen, C. Good for estimating protein quality, D. Egg has the highest NPU value', 'role': 'user'}, {'content': 'Answer: B \nExplanation: • 1 gram of proteins is equivalent to: 6.25 grams Nitrogen\n• NPU of India diets: 50-80', 'role': 'assistant'}]