What is the purpose of file extensions? A. They execute the mail merge function, B. They tell the operating system what kind of document you are creating. O C. They run the spelling checker and grammar checker features. D. They set up your files in an organized hierarchy.

Auser is given read permission to a file stored on an ntfs-formatted volume. the file is then copied to a folder on the same ntfs-formatted volume where the user has been given full control permission for that folder. when the user logs on to the computer holding the file and accesses its new location via a drive letter, what is the user's effective permission to the file? a. read b. full control c. no access d. modify e. none of the above