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。

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統計： A(0), B(14), C(2), D(0), E(1) #1126498