All client computers on your company network run Windows 7 and are members of an Active
Directory Domain Services (AD DS) domain. The help desk reports that several computers that run
Windows 7 Enterprise have bad sectors on their hard disks. You need to minimize the loss of data on
the computers caused by storing data on the bad sectors. Which command should you run?

A.
chkdsk.exe /r

B.
chkdsk.exe /f

C.
defrag.exe /c

D.
defrag.exe /x