On an Ethernet LAN, a jam signal causes a collision to last long enough for all other nodes to recognize that:

A.
A collision has occurred and all nodes should stop sending.

B.
Part of a hash algorithm was computed, to determine the random amount of time the nodes should back off before retransmitting.

C.
A signal was generated to help the network administrators isolate the fault domain between two Ethernet nodes.

D.
A faulty transceiver is locked in the transmit state, causing it to violate CSMA/CD rules.

E.
A high-rate of collisions was caused by a missing or faulty terminator on a coaxial Ethernet network.