A patient is to be given one unit of autologous blood over 3 hours using a giving set that delivers 15gt t/mL. The unit of blood contains 480mL What is the required drip rate in gttmin for the blood transfusion?
a. 44gt t/mi n
b. 40gt t/mi n
c. 36gt t/mi n
d. 42gt t/mi n