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: Pediatrics
The concetration of potassium in microgram in ORS is- 
Select and explain. 
A. 30 meq, B. 20 meq, C. 90 meq, D. 60 meq
B: 20 meq
Answer: B: 20 meq 
Explanation: Ans. is 'b' i.e., 20 meq