如果对于整个网络配置ospf协议(area1)，使...

A. R1_config# router ospf 100；R1_config# network 192.168.1.0 255.255.255.0 area 1；R1_config# network 192.168.2.0 255.255.255.0 area 1；R1_config# network 192.168.3.0 255.255.255.0 area 1

B. R2_config# router ospf 200；R2_config# network 192.168.5.0 255.255.255.0 area 1；R2_config# network 192.168.6.0 255.255.255.0 area 1

C. R3_config# router ospf 700；R3_config# network 192.168.3.0 0.0.0.255 area 1；R3_config# network 192.168.4.0 0.0.0.255 area 1；R3_config# network 192.168.5.0 0.0.0.255 area 1

D. R4_config# router ospf 2；R4_config# network 192.168.5.0 255.255.255.0 area 1；R4_config# network 192.168.7.0 255.255.255.0 area 1

如果对于整个网络配置ospf协议(area1)，使其相互实现互通，则下列神州数码1700系列路由器的配置正确的有：