Which option is a key challenge for customers and their IT teams caused by the evolution of communication tools?

Which option is a key challenge for customers and their IT teams caused by the evolution of communication tools?
A . skills of the IT teams
B . keeping the organizational structure unchanged while adapting to new collaboration solutions
C . fragmentation and complexity of collaboration tools
D . time for implementation of collaboration hardware
E . managing infrastructure that is not based on Cisco Collaboration
F . costs of collaboration

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Answer: D