The health-care provider prescribes an angiotensin-converting enzyme (ACE) inhibitor for the client diagnosed with essential hypertension. Which statement is the most appropriate rationale for administering this medication?

C ACE inhibitors prevent vasoconstriction and sodium and water retention. D ACE inhibitors decrease blood pressure by relaxing vascular smooth muscle. A ACE inhibitors prevent beta receptor stimulation in the heart. B This medication blocks the alpha receptors in the vascular smooth muscle.