Which description regarding OSPF Network LSAs is correct?（）

• A、They are originated by Area Border Router and are sent into a single area to advertise an Autonomous System Border Router.
• B、They are originat ed by Area Border Routers and are sent into a single area to advertise destinations outside that area.
• C、They are originated by the DR on every multi - access network. They include all attached routers including the DR itself.
• D、They are originated by  every router in the OPSF network. They include all routers on the link, interfaces, the cost of the link, and any known neighbor on the link.