21. The hematologic manifestation of folate and cobalamin deficiency are identical?
(A)microcytic RBC and band form neutrophil。
(B)macrocytic RBC and large hypersegmented neutrophil。
(C)macrocytic RBC and band form neutrophil。
(D)microcytic RBC and large hypersegmented neutrophil。
(E)microcytic RBC and normal neutrophil。