What is the reason for configuring a passive interface on a router?（）

• A、Allows interfaces to share common IP addresses.
• B、Allows an interface to remain up without the aid of keepalives.
• C、Allows a router to send routing and not receive updates via that interface.
• D、Allows a routing protocol to forward updates that is missing its IP address.
• E、Allows a router to receive routing updates on an interface but not send updates via that interface.