1 votes 1 votes ADITYA CHAURASIYA 5 asked Jan 4, 2018 ADITYA CHAURASIYA 5 183 views answer comment Share Follow See 1 comment See all 1 1 comment reply ADITYA CHAURASIYA 5 commented Jan 4, 2018 i edited by ADITYA CHAURASIYA 5 Jan 4, 2018 reply Follow Share how option c is correct??? how we can identify when lock is released 0 votes 0 votes Please log in or register to add a comment.