The correct answer is C. Linux is owned and sold by Microsoft.
A. Photoshop is a graphical design tool by Adobe. This is correct. Photoshop is a popular image editing and graphic design software developed and published by Adobe Inc.
B. Linux is free and open source software. This is correct. Linux is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged in a Linux distribution.
D. Windows XP is an operating system. This is correct. Windows XP is a discontinued operating system produced by Microsoft for personal computers, home and business use, released on October 25, 2001. It is the successor to Windows 2000 Professional and the predecessor to Windows Vista.
E. None of the above. This is incorrect. Option C is the only incorrect statement.