This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Preoperative assessment and monitoring in anaesthesia, Subject name: Anaesthesia
Which of the following is not isotonic solution 
Select and explain. 
A. 0.5% dextrose in water, B. 0.9% normal saline, C. Lactated ringer, D. 10% dextrose in water
D: 10% dextrose in water
Answer: D: 10% dextrose in water 
Explanation: An isotonic solution is one that has the same osmolarity, or solute concentration, as another solution. If these two solutions are separated by a semipermeable membrane, water will flow in equal pas out of each solution and into the other. 10%dextrose in water should be administered using a central line if possible and should not be infused using the same line as blood products as it can cause RBC hemolysis.