Which Statement Relates to Immune Thrombocytopenic Purpura (ITP)

Which statement relates to immune thrombocytopenic purpura (ITP) ?

A) ITP is formed in conditions of low flow and is made up of mostly red cells with larger amounts of fibrin and few platelets.
B) An alteration of multipotent stem cells, resulting in an excess production of platelets, causes ITP.
C) Mononuclear phagocytes in the spleen remove antibody-coated platelets from circulation.
D) Arterial clots are made up of mostly platelet aggregates held together by fibrin strands.