Which statement is true for certificate auto-enrollment on a Cisco IP phone?

A.
Cisco IP phones are capable of using digital certificates, but manual enrollment is
required.

B.
Microsoft Windows 2008 Enterprise Certificate Server Telephony plug-in can be used for

autoenrolling certificates.

C.
Cisco IP phones are not capable of using digital certificates.

D.
Cisco Unified Communications Manager Certificate Auto-Enroll Function (CAEF) is
capable of autoenrolling certificates.

E.
Cisco Unified Communications Manager CA Proxy Function (CAPF) is capable of
auto-enrolling certificates.

F.
Microsoft Windows 2003 Certificate Server Telephony plug-in can be used for
auto-enrolling certificates.