Which type of application allows this behavior?

You are creating an application for computers that run Windows XP or later. This application
must run after the computer starts. The user must not be aware that the application is
running.
The application performs tasks that require permissions that the logged-in user does not
have.
Which type of application allows this behavior?

A.
Windows Service application

B.
Windows Forms application

C.
DOS batch file

D.
Terminate-and-stay-resident (TSR) program