In the OSPF protocol, which of the following descriptions of DR is correct? ()
- If the priority values of the two routers are equal, the router with the larger Router ID is selected as the DR
- By default, all routers in this broadcast network will participate in the DR election
- If the priority values of the two routers are different, the router with the lower priority is selected as the DR
- DThe adjacency relationship should also be established between R and BDR