Which three of the following conditions are used to protect an admin route via ACL? (Choose three)

A.
You have defined an ACL in your module configuration

B.
At least one admin role must have permission for that route

C.
You have extended the controller from Mage_Adminhtml_Controller_Action

D.
You have defined a method _isAllowed which checks the permission

E.
The route name must start with admin