In a file directory tree structure, the "leaves" of the tree are subdirectories created by the user.

________ is the theory that holds that there is no universal moral truth and that instead moral principles are dictated by cultural tastes and customs

A) Divine Command Theory B) Relativism C) Utilitarianism D) Deontology

Which of the following are possible using public key systems?

a. digital signatures b. digital postmarks c. digital certificates d. all of the above