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单项选择题

配置一条到达主机180.18.30.1/24所在LAN的静态路由,下一跳地址为182.18.20.2,并且该路由的管理距离为90。正确的命令是()

A.ip router 90180.18.30.1255.255.255.0182.18.20.2
B.ip router 180.28.30.1255.255.255.0182.18.30.090
C.ip router 90180.18.30.0255.255.255.0182.18.20.2
D.ip router 180.18.30.0255.255.255.0182.18.20.290