What’ re the tips of online safety for teenagers according to the video？

What’ re the tips of online safety for teenagers according to the video？
A.To use privacy controls.
B.To read unsolicited advertising e-mail.
C.To protect the passworD.D.Don’t meet strangers you’ve met online.
正确答案：To use privacy controls.To protect the password.Don’t meet strangers you’ve met online.