A nurse is preparing to administer a subcutaneous injection of heparin to a client. Which of the following actions should the nurse plan to take?

A. Aspirating is not necessary for subcutaneous injections, as it is not a deep intramuscular injection. B. Withholding heparin for an elevated platelet count is unnecessary unless there is a confirmed heparin-induced thrombocytopenia (HIT). C. INR is not used to monitor heparin therapy. Heparin is monitored using aPTT (activated partial thromboplastin time) or anti-Xa levels. D. It is standard practice to validate heparin dosage with a second nurse to ensure safety due to the high risk of bleeding associated with this medication.