Renal dialysis patients usually suffer from anemia because
a) a large number of RBCs are lost with urine.
b) the life span of RBCs is shorter in kidney failure patients.
c) the failed kidney destroys large number of RBCs.
d) their kidneys stop sending the chemical required to stimulate the red bone marrow to cause RBC to mature faster.
e) the kidney fails to stimulate the red bone marrow.