An Older Patient Diagnosed with Type 2 Diabetes Mellitus Has

An older patient diagnosed with type 2 diabetes mellitus has been prescribed a combination of long and short-acting insulin. What should be included in the nurse's medication instruction?

A) Mixtures of insulin preparations with different onsets and durations of action are often given in a single injection to simplify the dosing.
B) When medications are mixed together it is cost-effective, using only one syringe per administration time.
C) Insulin mixtures allow the medication to be distributed more deeply into the subcutaneous layer of tissue and allow for better absorption.
D) Insulin combinations reduce the incidence of complications to the patient and to the injection site.