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. This is the safest and most accurate option. Insulin dosing is critical, and an overdose can lead to hypoglycemia, a serious condition. By discarding the incorrect dose and starting anew, the nurse ensures the client receives the precise amount of insulin prescribed. B. This option is inefficient and increases the risk of error. It involves using two different methods for insulin administration, which can lead to confusion and potential mistakes. Additionally, it doesn't address the initial error of dialing the incorrect dose. C. This option is extremely dangerous. Administering more insulin than prescribed can lead to severe hypoglycemia. Wasting the remaining four units does not rectify the primary issue of the overdose. D. Insulin pens are designed for precision. Altering the dialed dose after an error can compromise the accuracy of the insulin delivery system. This method is not reliable and can lead to inaccurate dosing.