E38B is an example of a number expressed in base ________

The Mark as Final command makes the document ________, which prevents additional changes to the document and disables typing, editing comments, and proofing marks

Fill in the blank(s) with correct word

?____ "scrambles" or encodes data so that even if unauthorized users somehow gain access to your files, they will not be able to read or understand what is in them.

A. ?Virtual memory B. Optical storage C. ?Data encryption D. ?A firewall