Which early browser was the first to run on multiple computer platforms including windows?

Question

Problem:

I am little bit confused, which is correct answer?  
Which early browser was the first to run on multiple computer platforms including Windows?​

​a) Mosaic
b) Internet Explorer
c) none of the above
d) Safari

Answer 1

The correct answer is: mosaic
Explanation 
For more details you can study and learn more from 
https://en.wikipedia.org/wiki/Mosaic_(web_browser)
  
Hope this might help you.