All the Following Statements Are True About Encryption,except

All the following statements are true about encryption,except:

A) Encryption has become an important way to protect data,especially on the Internet.
B) Encryption has become an important method for storing data on hardware devices,such as large hard drives on the Internet.
C) Passwords and other data can be transmitted in scrambled form and unscrambled by computer systems for authorized users.
D) Encryption involves using mathematical algorithms to scramble digital data before they are transmitted,and then to decode the data when they are received.