While Monitoring a Patient Receiving Chemotherapy Set to Infuse Over

While monitoring a patient receiving chemotherapy set to infuse over 3 hours, the nurse notes after the first hour that just over 160 mL of the original 500 mL has infused. Which action by the nurse is best?

A) Alter the pump setting to infuse at 150 mL/hr.
B) Alter the pump setting to infuse at 200 mL/hr to ensure the medication finishes on time.
C) Assure the patient the physician will be informed and new medication orders will be received.
D) Inform the patient the infusion rate is accurate.