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: Pediatrics
Reduced osmolarity ORS does not contain which of the following ion? 
Select and explain. 
A. Sodium, B. Potassium, C. Lactate, D. Citrate
C: Lactate
Answer: C: Lactate 
Explanation: Low osmolarity ORS Sodium - 75 mmol/L Potassium - 20 mmol/L Chloride - 65 mmol/LCitrate - 10 mmol/LGlucose - 75 mmol/L (Refer: OP Ghai's Textbook of Pediatrics, 8th edition, pg no. 263)