单选题Which of the following is NOT a security feature relating to user accounts？（）A Some commands can be password protected requiring logged in customers to re-enter their password.B A user account can be disabled automatically， after a specified number of
题目
单选题
Which of the following is NOT a security feature relating to user accounts？（）
A
Some commands can be password protected requiring logged in customers to re-enter their password.
B
A user account can be disabled automatically， after a specified number of invalid login attempts.
C
An account can have multiple valid passwords at the same time， any of which can be used to access the account.
D
The password policy feature can allow the system to require passwords to include a minimum number of numeric characters.
E
Logged in customers can be logged off of the system after a specified period of inactivity.