单项选择题

A.白细胞<4×10/L,粒细胞<2×10/L
B.白细胞<3×10/L,粒细胞<2×10/L
C.白细胞<3×10/L,粒细胞<1×10/L,
D.白细胞<2×10/L粒细胞<1×10/L
E.白细胞<2×10/L,粒细胞<0.5×10/L