If You Centrifuge (Spin) Whole Blood You Will Find the Band

Multiple Choice

If you centrifuge (spin) whole blood you will find the band of white blood cells and platelets (the buffy coat) is much thinner than the packed red blood cells below it. This difference reflects the fact that _________.

A) white blood cells are smaller than red blood cells
B) white blood cells are fewer in number than red blood cells
C) platelets are larger than red blood cells
D) platelets are larger than white blood cells