A customer is preparing to upgrade their Microsoft Exchange environment from Exchange 2003 to Exchange 2007. They currently use Replication Manager to clone the databases on a regular interval and would like to use one of the clones to perform the upgrade. The customer has asked you to provide any prerequisites to accomplish this.
What must you tell the customer?

A.
The Exchange System Path and Transaction Log must have different paths

B.
The transaction logs and databases must be placed on the same devices

C.
There is no database upgrade process they must move the mailboxes between Exchange servers

D.
They must ensure that the EDB and STM files are stored in the same folder prior to replication