For security reasons， an administrator is asked to modify the system to prevent someone from leaving a terminal logged in. Which of the following options would enable a five minute timeout for all users（）
- AAdd the following line to /etc/environment： TMOUT=300
- BAdd the following lines to /.profile TMOUT=5 export TMOUT
- CRun the following command： chuser -u ALL -a TIMEOUT=5M
- DRun the following command： chsec -u ALL -a TIMEOUT=600