Which three statements are true when migrating from an existing Cisco Unified Communications platform to Cisco Business Edition 6000? (Choose three.)
A. License migration from older standalone Cisco Unified Communications Manager releases is not possible
B. License migration is also supported from Cisco Business Edition 3000 and 5000.
C. Configuration and user data does not have to be reprovisioned
D. License migration is supported using the Cisco 9 and 3 upgrade offer.
E. Only some types of existing Cisco IP phones can be reused
F. When migrating, any service and software subscriptions must first be terminated and credit requested for the remaining period of the contract
