Match the following?     Company                             Operating system 1. Google                               
a. MAC 2. Apple                                  
b. Android 3. Microsoft                            
c. Window 4. Open-Source                     
d. Linux

·         MAC OS is a Unix operating system developed and marketed by Apple Inc. ·         Android operating system is a mobile operating system developed by Google. ·         Microsoft Windows, commonly referred to as Windows, is a group of several proprietary graphical operating system families, all of which are developed and marketed by Microsoft. ·         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.