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: Surgery
Isotonic solution which supplies calories but not electrolytes: 
Select and explain. 
A. 5% dextrose., B. 0.9% Nacl solution., C. Ringer's Lactate solution., D. Darrow's solution.
A: 5% dextrose.
Answer: A: 5% dextrose. 
Explanation: None