How is authentication handled with OSPFv3?

How is authentication handled with OSPFv3?
Select the best response.

A.
OSPFv3 for IPv6 authentication is supported by SHA-1 authentication.

B.
OSPFv3 for IPv6 authentication is supported by MD5 authentication.

C.
OSPFv3 for IPv6 authentication is supported by IPv6 IPsec.

D.
OSPFv3 for IPv6 authentication is supported by IPv4 IPsec.