During an intramuscular injection using the Z-track method, you are required to administer an irritant medication that can cause staining of the skin. After positioning the needle at a 90-degree angle to the injection site and displacing the skin and subcutaneous tissues laterally, what should be your next step to correctly perform this method?
Inject the medication slowly and steadily, then wait 10 seconds before withdrawing the needle.
Aspirate for blood to ensure the needle is not in a blood vessel before injecting the medication.
Withdraw the needle immediately after injecting to prevent the medication from damaging tissue.
Release the displaced skin and subcutaneous tissues before injecting the medication.