Refer to the exhibit. Based on the output from the show command on RT1which statement is true? （）
- A OSPFv3 uses global IPv6 addresses to establish neighbor adjacencies.
- B RT1 has a subnet mask of 64 bits .
- C RT1 has FastEthernet0/0 set as a DR for network type broadcast.
- D OSPFv3 uses Link - local addresses to establish neighbor adjacencies.
- E RT1does not have a global IPv6 address set on FastEthernet0/0.
- F OSPFv3 uses IPv4 addresses to establish nei ghbor adjacencies.