Aclient has an issue with large files taking a long time to open or save. as time goes by, the issue worsens. the client has hundreds of gbs of files that are still in the process of backing up. the technician has verified that the hard drive is healthy and there are no signs of failure. which of the following troubleshooting steps should the technician perform next? a. install the latest drivers from the hardware vendor. b. perform a scan of the drive for file fragmentation. c. run chkdsk on the workstation’s hard drive. d. reformat the drive and reinstall the os.