When learning to use an insulin pen, a client with diabetes dials 28 units of regular insulin instead of 24 units, the prescribed dose. Which action should the nurse take?

A. Administering an incorrect dose of insulin can lead to hypoglycemia, a serious complication. Discarding the incorrectly dialed dose ensures patient safety. Directly addresses the error and prevents potential harm. B. This option is inefficient and increases the risk of error. It's unnecessary to use both a pen and a syringe for a single dose. Does not address the immediate issue of the incorrect dose. C. Administering more insulin than prescribed is dangerous and can lead to hypoglycemia. Wasting the remainder doesn't address the core issue of the incorrect dose. Increases the risk of hypoglycemia. D. Insulin pens are designed to be precise. Dialing down to the correct dose after an error can compromise the accuracy of the dose. Does not ensure accurate dosing.