0 votes 0 votes closed with the note: bad-question How can this be true...? I guess answer is b Operating System ace-test-series test-series bad-question + – Dhawal Gajwe asked Feb 5, 2017 closed Mar 7, 2019 by Rishi yadav Dhawal Gajwe 470 views comment Share Follow See all 0 reply Please log in or register to add a comment.