ben, an employee in the legal department, has created several sensitive documents on his computer that must be made available to all members of the executive staff who work in the same building. due to the sensitive nature of these document, ben not only wants to restrict access to the files, but also make it impossible for anyone else in the company to even know where they are stored unless specifically given the unc path to the files. which of the following would most likely fulfil ben's file management requirements?