The Nurse Needs to Administer Insulin Subcutaneously (Subcut) to an Obese

The nurse needs to administer insulin subcutaneously (subcut) to an obese patient. Which is the proper technique for this injection?

A) Using the Z-track method
B) Inserting the needle at a 5- to 15-degree angle until resistance is felt
C) Pinching the skin at the injection site, and then inserting the needle to below the tissue fold at a 90-degree angle
D) Spreading the skin tightly over the injection site, inserting the needle, and then releasing the skin