Which of the following options is the best way to protect yourself against a weaponized PDF file?

Question $26$ options:

Scan every PDF file within your organization for known attacks$/$weaponization techniques and delete any files that are determined to be infected.

Identify all of your PDF reader applications, install every manufacturer suggested update then scan every PDF file in your organization. Delete any files that are determined to be infected.

Identify all of your PDF reader applications, then install all security patches and updates. Delete any old versions of Adobe Reader to prevent hackers from leveraging vulnerable versions of the application that may still be resident on your system. Then scan every PDF file in your organization. Delete any files that are determined to be infected.

None of the above