You have an Exchange Server 2007 environment. Your nightly backups are scheduled to run on Mailbox servers at 1:00

A.
M. Each backup takes approximately four hours. Your maintenance window is currently set to start at 10:00 P.M. and to end at 3:00 A.M. You notice that online defragmentations are not finishing successfully. This operation typically takes 4.5 hours. You need to ensure that database
backups and online defragmentations finish successfully prior to 6:00 A.M. each day. What should you do?

B.
Configure the maintenance window to end at 1:30 A.M

C.
Configure the maintenance window to begin at 8:00 P.M

D.
Configure the backups to begin at 10:00 P.M

E.
Configure the backups to begin at 12:00 A.M