A) Operating system; a client system
B) Operating system: instructions set
C) Application programs: an operating system
D) Application programs: a client system
E) Operating system; application programs
Correct Answer: E
Solution :Every computer has operating system which is a collection of software that manages computer hardware resources and provides common services for computer programs. It also comprises application programs which is a group of programs designed for end users. They are designed to perform a specific function directly for the user.
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