In order to prevent other users from editing files in ‘C:\ Files’, which of the following steps should
be taken?

A.
Set NTFS permissions to read only

B.
Set the folder to index files for search

C.
Set the local administrator as the owner of the folder

D.
Set network share permissions to read only

Explanation:
http://technet.microsoft.com/en-us/magazine/2005.11.howitworksntfs.aspx