The Red Hazel Company has received its router from Cisco and is ready to install Cisco Unified CallManager Express. Where will the company find its Cisco Unified CallManager Express software?（）
A. Cisco.com
B. embedded in Flash on the hardware
C. e-mail download from Cisco
D. on a CD-ROM included with installation materials
E. only from a Cisco SE, due to special licensing consideratio
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