The ____ function should be used before deleting files and directories to determine if the file or directory name exists.

Internet Explorer's tabs bar is located________

A) to the right by the charms B) below the status bar C) to the left of the browser window D) above the address bar

A dollar sign ($) as the first character in a variable means it is a class variable that can be referenced in any procedure within the class.

Answer the following statement true (T) or false (F)