You are called into the office of a newly hired manager. he has copied a file from his old place of work onto his new workstation, but is now receiving an error message that access is denied each time he tries to access the file. he is not the owner of the file, and not a member of the group the file is associated with. which of the following represents the least set of file permissions needed for him to be able to read and write to the file? a. 111b. 222c. 444d. 666