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: Surgery
The minimum amount of proteins needed for positive nitrogen balance is - 
Select and explain. 
A. 20-30 gm/day, B. 35-40 gm/day, C. 50 gm/day, D. 60 gm/day
D: 60 gm/day
Answer: D: 60 gm/day 
Explanation: The minimum amount of proteins needed to maintain nitrogen equilibrium is about 0.8 gm/kg of protein per day i.e. about 56 to 60 gm. of protein per day.