A nurse is preparing to administer liquid ibuprofen to a school-age child. The prescription reads 200 mg every 8 hr. The amount available is 100 mg/5 mL. How many mL of ibuprofen should the nurse administer over a 24-hr period? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

C 30 mL A 10 mL B 20 mL D 40 mL