When enrolling a Cisco IOS router to a CA server using the SCEP protocol, which one of the following is NOT a required step?

A.
Authenticate the CA server’s certificate.

B.
Configure an ip domain-name on the router

C.
Generate the RSA key pairs on the router.

D.
Import the server certificate to the router using TFTP.

E.
Define the crypto pki trustpoint on the router.