You are responsible for migrating client computers from Windows 98 and Windows NT Workstation 4.0 to Windows 2000 Professional. You have installed Windows 2000 Professional and reinstalled the necessary application on 10 computers. You have returned these computers to their users. The users of these computers report that their word processing application will not start. What should you do?（）

A. Set the permission on the application to Execute.
B. Add the application to the Run key in the registry.
C. Apply the Securews.inf security template on the users’ computers.
D. Apply the compatws.inf security template on the users’ computers.