Which of the following commands can be used to ensure that all the files in /home/user and its subdirectories…?

Which of the following commands can be used to ensure that all the files in /home/user and its subdirectories are accessible only by the owner of /home/user?

A.
chmod 711 /home/user

B.
chmod 700 /home/user

C.
chown user /home/user/*

D.
chown -R user /home/user