Considering the patient's current medications, what is the most likely rationale for prescribing lisinopril in combination with hydrochlorothiazide and amlodipine?
To manage the patient's pain reported as a score of 4 on a 0-10 scale. To achieve better blood pressure control through synergistic effects. To reduce the potential side effects of amoxicillin/clavulanate. To address chronic sinusitis symptoms more effectively.