Which two statements about the ipv6 ospf authentication command are true?

Which two statements about the ipv6 ospf authentication command are true? (Choose two.)

A.
The command is required if you implement the IPsec AH header.

B.
The command configures an SPI.

C.
The command is required if you implement the IPsec TLV.

D.
The command can be used in conjunction with the SPI authentication algorithm.

E.
The command must be configured under the OSPFv3 process.