Which list of the steps of migration is in the correct sequence?

A.
Deploy Cisco Unified Communications service, deploy UC to the remote sites, deploy UC at the
central site, deploy UC-ready IP infrastructure

B.
Deploy UC-ready IP infrastructure, deploy Cisco Unified Communications service, deploy UC at
the central site, deploy UC to the remote sites

C.
Deploy UC-ready IP infrastructure, deploy Cisco Unified Communications service, deploy UC to
the remote sites, deploy UC at the central site

D.
Deploy Cisco Unified Communications service, deploy UC-ready IP infrastructure, deploy UC to
the remote sites, deploy UC at the central site

Explanation: