What is the function of the command crypto pki trustpoint name when you are configuring Cisco UnifiedBorder 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.
