Nurse is preparing to administer LR 1,000mL IV over 8hr. Drop factor of manual tubing is 10 gtt/ml. Nurse should set manual IV infusion to deliver how many gtt/min. (Round to nearest whole number)
a) 21 gtt/min
b) 32 gtt/min
c) 42 gtt/min
d) 63 gtt/min