Which one of the following is not a system software ?

Which one of the following is not a system software ?

UNIX
LINUX
WINDOWS 10
AUTOCAD
This question was previously asked in
UPSC CISF-AC-EXE – 2021
Software can be broadly classified into system software and application software.
– System software includes operating systems, device drivers, compilers, assemblers, etc., which manage and control the computer hardware and provide a platform for running application software. UNIX, LINUX, and WINDOWS 10 are all operating systems, which are core examples of system software.
– Application software consists of programs designed for end-users to perform specific tasks, such as word processing, browsing the web, playing games, or creating designs. AUTOCAD is a Computer-Aided Design (CAD) application used for drafting and design, making it a type of application software.
– System software manages computer resources and provides a platform for applications.
– Application software performs specific tasks for the end-user.
– UNIX, LINUX, and WINDOWS 10 are operating systems (system software).
– AUTOCAD is a user-oriented design program (application software).
The distinction isn’t always rigid, as some software has characteristics of both (e.g., utilities included with an OS), but the primary function usually places it in one category.