The /etc/default/passwd file contains a number of configuration parameters that can be used to constrain the character composition of user passwords. What is one of the dangers of having password composition too tightly constrained?

A.
Password complexity rules apply only to the English alphabet.

B.
The entropy of the resulting password strings will be very high.

C.
Duplication of encrypted user password strings is much more likely.

D.
Limited password value possibilities can simplify brute force attacks.

E.
Passwords are harder to compute when using many character classes.