You have an Exchange Server 2007 environment. You perform a full backup each night prior to the maintenance window. Your deleted item retention period is set to 10 days. You need to reduce the total storage that is required for backups. What should you do?

A.
Perform the backups after the maintenance window

B.
Perform an incremental backup each night, and perform a full backup each weekend

C.
Decrease the deleted item retention period to 5 days

D.
Increase the deleted item retention period to 15 days