选择题：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.