Scenario A

user1@PC:~$ ls  -ld   /  /home/  .

drwxrwxr-x 11 user1 user1 4096 Jan 18 08:29  .

drwxr-xr-x 25 root  root  4096 Nov 13 12:55  /

drwxr-xr-x  8 root  root  4096 Jan 14 01:59  /home/

user1@PC:~$ umask

0002

user1@PC:~$ groups user1 user2 user3 root

user1 : user1 user3

user2 : user2 user1

user3 : user3 user2

root : root

user1@PC:~$ mkdir source destination

user1@PC:~$ chmod o+rwx destination/

user1@PC:~$ chmod g+rwx source/

user1@PC:~$ chmod o+t destination/

user1@PC:~$ umask 070

user1@PC:~$ touch  source/file1

user1@PC:~$ echo "file1 of user1" > source/file1

user1@PC:~$ chgrp  user3  source/

user1@PC:~$ chgrp -R user3 source/

user1@PC:~$ chown -R :user3 destination/

user1@PC:~$ su user2

Password: 

user2@PC:/home/user1$ umask 077

user2@PC:/home/user1$ touch  destination/file2

user2@PC:/home/user1$ echo "file2 of user2" > destination/file2

user2@PC:/home/user1$ su user3

Password: 

user3@PC:/home/user1$ umask 700

user3@PC:/home/user1$ touch  source/file3

user3@PC:/home/user1$ exit

exit

user2@PC:/home/user1$ exit

exit

user1@PC:~$ echo "file3 of user3" > source/file3

After executing Scenario A, answer the following questions:

Question:

Select who can modify file2: