下列情况中大气环境评价工作等级应确定为一级的是( )。

A．P_max=85%，D_10%=4km
B．P_max=85%，D_10%=6km
C．P_max=80%，D_10%=4km
D．P_max=75%，D_10%=6km

If law and order as well as rules and regulations _____, neither the citizen nor his property is safe.[ ]

A. are not observed

B. is not observed

C. were not observed

D. was not observed