单选题

在配置OSPF协议时，哪个华为命令是宣告所有业务接口进Area 0

Question

A. router<br>ospf area 0<br><br>network 0.0.0.0 255.255.255.0 area 0

B. ospf<br>1<br><br>area 0<br><br>network 0.0.0.0 0.0.0.0

C. router<br>ospf 1<br><br>area 0<br><br>network 0.0.0.0 0.0.0.0

D. router<br>ospf area 0<br><br>network 0.0.0.0 255.255.0.0 area 0