The Nurse Is Teaching a Patient About Self-Injection of Insulin

The nurse is teaching a patient about self-injection of insulin.
What should the nurse tell the patient to do regarding injection sites?

A) Avoid the abdomen because absorption is irregular.
B) Choose a different site at random for each injection.
C) Give the injection in the same area each time to promote consistent absorption.
D) Rotate sites within the same location for about 1 week before rotating to a new location.