A nurse is preparing to administer 10 units of regular insulin and 20 units of NPH insulin to a client. What is the sequence of events the nurse should follow? (Move the steps of mixing insulin on the left into the box on the right, placing them in the selected order of performance. All steps must be used.)

B. Inspect vials for contaminants: It is important to visually inspect both the NPH and regular insulin vials for any particles, cloudiness (for regular insulin), or other contaminants before use. This ensures the medication is safe for injection. E. Roll NPH vial between palms of hands: NPH insulin is a suspension and must be gently mixed by rolling the vial between the palms of the hands. This prevents the insulin from becoming clumpy or ineffective and ensures proper dosage. F. Inject air into NPH insulin vial: Injecting air into the NPH vial before withdrawing the insulin helps equalize the pressure inside the vial, which makes it easier to withdraw the medication without contaminating the vial. A. Inject air into regular insulin vial: Injecting air into the regular insulin vial ensures that no NPH insulin is introduced into the regular insulin vial. This prevents cross-contamination of the two insulins. C. Withdraw short-acting insulin into syringe: After injecting air into both vials, the nurse should first withdraw the short-acting regular insulin into the syringe, as it is clear and should be drawn first to avoid contaminating it with NPH insulin. D. Add intermediate insulin to syringe: Finally, the nurse should withdraw the NPH insulin into the syringe after the regular insulin is withdrawn. This allows for proper mixing without contamination, as regular insulin should always be drawn first.