What is the function of the command crypto pki trustpoint name when you are configuring Cisco
Unified Border Element for SRTP-RTP Internetworking?

A.
It declares the trustpoint that the router uses and enters CA-trustpoint configuration mode.

B.
It specifies the key pair to associate with the certificate.

C.
It specifies the enrollment parameters of a CA.

D.
It obtains the certificate for the router from the CA.