The patient is to receive 2 units of packed red blood cells. The new nurse demonstrates understanding of the blood transfusion protocol when she says which statement?

A. "I need to change the administration set after both units of blood have infused."
B. "I need to change the administration set every 2 hours."
C. "I need to change the administration set every 1 hour."
D. "I need to change the administration set with each unit of blood."