Which two commands can be used to implement a valid Cisco IOS XE IPv6 static tunnel configuration? (Choose two.)
A. interface Tunnel100ipv6 enableipv6 address 2001:DB8::1/128tunnel destination 209.165.201.2tunnel mode ipv6ip 6to4
B. interface Tunnel100ipv6 enableipv6 address 2001:DB8::1/128tunnel source Ethernet 0/1tunnel destination 209.165.201.2tunnel mode gre ip
C. interface Tunnel 100ipv6 enableip address 209.165.201.2tunnel source Loopback 0tunnel mode ipv6ip 6to4
D. interface Tunnel100ipv6 enableipv6 address 2001:DB8::1/128tunnel source Ethernet 0/1tunnel destination 209.165.201.2tunnel mode isatap
E. interface Tunnel100ipv6 enableipv6 address 2001:DB8::1/128tunnel source Ethernet 0/1tunnel destination 209.165.201.2tunnel mode auto-tunnel
F. interface Tunnel100ipv6 enableipv6 address 2001:DB8::1/128tunnel source Ethernet 0/1tunnel destination 209.165.201.2tunnel mode ipv6ip
