Go back to 70-687 - Configuring Windows 8

Question :-

A company has client computers that run Windows 8.1. The company uses Windows BitLocker Drive Encryption with the data-only option o all client computers. You delete a file containing highly confidential information from your computer. You need to clear the free space on the hard drive to minimize the chance of the confidential information being recovered. Which command should you run on the client computer?
manage-bde ­w
chkdsk/spotfix
diskpart clean
BdeHdCfg -target c: shrink

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