Which of the following does not fall under the category of open source

MCQ Answer

Which of the following does not fall under the category of open source?

निम्न में से कौन सा ओपन सोर्स की श्रेणी में नहीं आता है?

Topic : Introduction to Operating System

A. Open Office

B. Linux

C. Ubuntu

D. Windows 10

Correct Answer is :

D. Windows 10