An 18 month-old weighing 22 pounds is admitted to the pediatric unit with a diagnosis of dehydration. A replacement bolus of normal saline at 20 mL/kg is ordered to be administered intravenously over 40 minutes. In mL/hour, what will be the setting for the IV delivery system?
a) 660 mL/hour
b) 330 mL/hour
c) 440 mL/hour
d) 550 mL/hour