The Nurse Is Teaching Patients About Self-Injection of Insulin

The nurse is teaching patients about self-injection of insulin. Which statement is true regarding injection sites?

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