单项选择题

A.0.02mg/m2,0.86mg/m2,0.1mg/m2
B.0.02mg/m3,0.86mg/m3,0.1mg/m3
C.0.06mg/m3,0.6mg/m3,0.1mg/m3
D.0.02mg/m2,0.6mg/m2,0.1mg/m2