What do you understand as a Standalone software in principle of computer engineering?

A$.$ Application systems that run on a local computer, such as a PC$.$

B$.$ Applications that execute on an extended computer and that are accessed by hackers from their own PCs

C$.$ Software control systems that control and manage hardware devices. Embedded systems may be found in devices such

as MP$3$ play

D$.$ Applications that execute on a remote computer and that are accessed by users from their own PCs or terminals.