Which statement about contention and congestion in switches and routers is FALSE? Group of answer choices a. When contention becomes sufficiently severe, it becomes congestion. b. Datagram networks are immune to contention and congestion because they permit additional connections only when sufficient resources are available in their switches or routers. c. Contention occurs when a frame/packet must wait in a queue because there is at least one other frame/packet currently being transmitted ahead of it on the outbound interface (port). d. Congestion occurs when no more switch or router memory remains to hold inbound frames/packets. Frames/packets which arrive during congestion will be lost (dropped).

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