You administer a Microsoft SQL Server database named Sales. The database is 3 terabytes in size.
The Sales database is configured as shown in the following table.

You discover that all files except Sales_2.ndf are corrupt. You need to recover the corrupted data in
the minimum amount of time. What should you do?

A.
Perform a restore from a full backup.

B.
Perform a transaction log restore.

C.
Perform a file restore.

D.
Perform a filegroup restore.

Explanation:
Reference:
http://technet.microsoft.com/en-us/library/ms187048.aspx