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
True about citrate in ORS 
Select and explain. 
A. Cheaper, B. Nutritious, C. Increases shelf, D. Tastier
C: Increases shelf
Answer: C: Increases shelf 
Explanation: In WHO ORS, sodium bicarbonate has been replaced by trisodium citrate: –
Makes the product more stable –
Results in less stool output (especially in high-output diarrhoea like cholera) as it increases intestinalabsorption of sodium and water