单选题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=300BAdd the following lines to /.profile TMOUT=5 export TMOUTCRun the following command： chuser -u ALL -a TIMEOUT=5MDRun the following command： chsec -u ALL -a TIMEOUT=600
单选题
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（）
A
Add the following line to /etc/environment： TMOUT=300
B
Add the following lines to /.profile TMOUT=5 export TMOUT
C
Run the following command： chuser -u ALL -a TIMEOUT=5M
D
Run the following command： chsec -u ALL -a TIMEOUT=600
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