Which action changes the default editor for ALL users on the system from vi to edit?

A.
Issue the command:
export EDITOR=/usr/bin/edit edit each users .profile to change the EDITOR value to /usr/bin/edit

B.
Modify /.profile and change the EDITOR variable to /usr/bin/edit

C.
Modify /etc/environment and add
EDITOR=/usr/bin/edit export EDITOR

D.
Modify /etc/security/defaults and change the EDITOR value to /usr/bin/edit