Nextair Corporation has determined that the hardware running BlackBerry Enterprise Server software version 4.1.6 will be insufficient to handle version 5.0. They plan to perform a cutover upgrade using a new SQL database. What is the primary advantage of implementing this strategy? | Blackberry

A. The SQL database can be hosted locally to the BlackBerry Enterprise Server
B. The SQL database can be hosted on two separate Microsoft SQL Servers
C. BlackBerry device users are automatically migrated to BlackBerry Enterprise Server software version
5.0 during the installation
D. In an emergency, it is easier to roll back to the previous version

Answer: D