Which of the Following Is the Cause of Red Blood

Which of the following is the cause of red blood cell deficiency in autoimmune hemolytic anemia? (Select all that apply.)

A) inability of red blood cells to develop normally in the bone marrow
B) loss of red blood cells due to widespread pinpoint hemorrhages
C) hemolysis by assembly of membrane-attack complexes
D) phagocyte-mediated clearance in the spleen
E) rapid turnover of red blood cells due to CD8 T-cell killing.