When deploying the Cisco Unified Wireless IP Phone 7925 running firmware release 1.3.4 on a Cisco Unified architecture, which features should you enable to support fast secure roaming while maintaining a scalable deployment? 

Answer options:

A. The controller supports PKC, so use WPA2 802.1X.
B. The controller does not support PKC, so use WPA2 PSK.
C. The controller does not support OKC, so use WPA2 PSK.
D. The 7925 does not support WPA2 with Cisco CKM, so use WPA2 PSK.
E. The 7925 supports WPA2 with Cisco CKM, so use WPA2 802.1X.
F. The 7925 supports PKC, so use WPA2 802.1X.

E