which three configuration steps are required?

In order to implement CGA on a Cisco IOS router for SeND, which three configuration
steps are required? (Choose three.)

A.
Generate an RSA key pair.

B.
Define a site-wide pre-shared key.

C.
Define a hash algorithm that is used to generate the CGA.

D.
Generate the CGA modifier.

E.
Assign a CGA link-local or globally unique address to the interface.

F.
Define an encryption algorithm that is used to generate the CGA.