Which two statements regarding the advantages and benefits of security implementations in Cisco Unified Communications solutions are true? (Choose two.)

A.
The Cisco 1861 Integrate Services Router provides built-in security with hardware encryption and decryption.

B.
Voice clients are critical elements in the Cisco Self-Defending Network, which integrates security throughout all aspects of the network.

C.
Cisco Unified IP phones provide Extensible Markup Language (XML) capabilities to extend security functions on a phone.

D.
Cisco Unified Communications Manager Express is runs on Linux in order to protect against vulnerabilities and attacks.