You are working as a senior technician at AIOTestKing.com. You instruct a trainee to run the CHKDSK /R on a computer in the marketing department. What will the CHKDSK /R command do?

A.
perform an exhaustive disk check, locate bad sectors, and recover readable information.

B.
set a disk as read-only, perform an exhaustive disk check and repair bad sectors.

C.
consolidate fragmented files and folders on the computers hard disk.

D.
scan and verify the versions of all protected system files using the tools default operation.