Which One of the Following Statements Concerning Linux Passwords Is

Multiple Choice

Which one of the following statements concerning Linux passwords is true?

A) All passwords can be decrypted using the system administrator's master password.
B) Passwords may never start with a non-letter.
C) Users cannot change their password once it has been set.
D) Passwords are only stored in hashed form.
E) Passwords may be at most six characters long.