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: Composition of standard and reduced osmolarity ORS solutions ORS - Standard Reduced Osmolarity Contents| mEq/L mEq/L Glucose 111 75 Sodium 90 75 Choride 80 65 Potassium 20 20 Citrate 10 10 Osmoarity 311 245 30 mmol/l of bicarbonate instead of 10 mmol/l of citrate REF : OP-GHAI 9th edition