When setting up a file system that is intended to be shared among several users, it is good practice to configure permissions so that:
(a) each user can only view the contents of a folder but not modify it.
(b) the administrator must manually give each user access to each folder and file each time it is needed.
(c) each user’s account is able to access all of the folders and files.
(d) each user’s account is able to access only the folders and files necessary.