You need to reconfigure backups to occur twice a day, at 3:00

You are the administrator for a network that runs Windows Small Business Server (SBS) 2011 Standard. Your current backup schedule creates a single backup at 11:00 P.M. This backup interferes with a business process that runs each night. You need to reconfigure backups to occur twice a day, at 3:00 A.M. and at 6:00 P.M. You also need to ensure that existing backups are available for recovery.
What should you do?

A.
In the Windows Small Business Server 2011 Standard Console, select the existing backup, and select Change Backup Schedule. Select a Twice a day backup schedule.

B.
In the Windows Small Business Server 2011 Standard Console, select the existing backup, and select Change Backup Schedule. Select Custom and select 3 AM and 6 PM.

C.
In the Windows Server Backup console, select Backup Schedule. Add 3 AM and 6 PM as backup times.

D.
In the Windows Server Backup console, select Backup Schedule. Select Stop Backup. Create a new backup schedule that has backups at 3 AM and 6 PM.