$ chmod o-w datafile
A. sets write permission to everyone for datafile
B. sets write permission to others for datafile
C. clears write permission to everyone for datafile
D. clears write permission to others for datafile
Answer:A
$ chmod o-w datafile
A. sets write permission to everyone for datafile B. sets write permission to others for datafile C. clears write permission to everyone for datafile D. clears write permission to others for datafile