Which of the following is not an essential prerequisite for AutoQoS to be correctly applied to an interface（）

• A、The interface must be configured as a Multilink PPP interface.
• B、The correct bandwidth should be configured on the interface.
• C、A QoS policy must not be currently attached to the interface.
• D、CEF must be enable
• E、AutoQoS must be enabled globally before it can be enabled on the interface.
• F、An IP address must be configured on the interface if its speed is equal to or less than 768 kbps.