An order is given to administer 250. mg of furosemide, a diuretic, over the course of eight hours by IV. If a 500. mL bag contains 200. mg of furosemide, what flow rate, in milliliters per hour, should be administered to the patient?
78 mg/hour
50 mL/hour
50 mg/hour
32 mL/hour
78 mL/hour