The nurse is preparing to administer hydration via an intravenous route to a client. The nurse understands that the patient needs an isotonic solution. Which of the following options is considered an isotonic solution?

A. 0.9% Sodium chloride (normal saline) is an isotonic solution, meaning it has a similar osmolality to the blood and will not cause fluid shifts into or out of cells. B. This is a hypotonic solution, which has a lower osmolality than blood and can cause water to move into cells, potentially leading to cell swelling. C. This solution is considered isotonic, but it has dextrose, which is metabolized quickly in the body, potentially making the solution hypotonic after glucose is used. D. This is incorrect, as 0.9% Sodium Chloride is an isotonic solution.