What are the usual recommended characters in a password?

A.
5-9 characters

B.
3-9 characters

C.
6-9 characters

D.
4-9 characters

Explanation:
It is generally recommended that passwords should consist of between six and nine characters. Passwords of five characters or less must be avoided.
Incorrect Answers:
A, B, D: It is generally recommended that passwords should consist of between six and nine characters.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 466 467.