单项选择题

A.2.36mm筛孔为±1%,其余筛孔为±2%
B.2.36mm筛孔为±2%,其余筛孔为±1%
C.0.075mm筛孔为±1%,其余筛孔为±2%
D.0.075mm筛孔为±2%,其余筛孔为±1%