将Catalyst 6500交换机的设备管理地址设置为203.29.166.9/24,默认网关的IP地址为203.29.166.1,正确的配置语句是______。 A) set interface vlan1 203.29.166.90.0.0.255 203.29.166.1 B) set interface vlan1 203.29.166.9 255.255.255.0 203.29.166.1 C) set interface sc0 203.29.166.9 0.0.0.255 203.29.166.1 D) set interface sc0 203.29.166.9 255.255.255.0 203.29.166.1