The correct answer is D. All of above.
An operating system (OS) is a system software that manages computer hardware and software resources and provides common services for computer programs. Operating systems are found on many devices that contain a computerâfrom cellular phones and personal computers to supercomputers and Web servers.
An application system is a computer program that performs a specific task or set of tasks. Application systems are designed to meet the needs of a particular user or group of users. They can be used for a variety of purposes, such as word processing, spreadsheets, databases, and games.
System software is a type of computer program that is designed to run a computer’s hardware and application programs. System software includes the operating system, device drivers, and other programs that control the computer’s hardware and software resources.
All of these types of software run on a computer hardware and serve as a platform for other system to run on.