Which action does route poisoning take that serves as a loop-prevention method?
A.
It immediately sends routing updates with an unreachable metric to all devices.
B.
It immediately sends routing updates with a metric of 255 to all devices.
C.
It prohibits a router from advertising back onto the interface from which it was learned.
D.
It advertises a route with an unreachable metric back onto the interface from which it was
learned.
E.
It poisons the route by tagging it uniquely within the network.