This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Medicine
In hyponatremia following renal failure sodium level should be maintained at - 
Select and explain. 
A. I20meq/ml, B. 125 meq/ml, C. 130 meq/ml, D. 135 meq/ml
D: 135 meq/ml
Answer: D: 135 meq/ml 
Explanation: Hyponatremia in CKD population is associated with increased moality, but the effect on renal outcome was unknown. ... Hyponatremia (serum sodium <135 mEq/L) was associated with excessive volume and volume depletion, measured as total body water by bioimpedance analysis, in diuretic users, but not in diuretic non-users. Ref Harrison20th edition pg 234