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

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.