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Identify a key difference between a simplex and a trunked communications system:
Identify a key difference between a simplex and a trunked communications system:
A. Simplex communications are direct from user to user while trunked communications must travel through radio infrastructure and a controller.
B. Simplex communications must travel through radio infrastructure and a controller, while trunked communications are direct from user to use.
C. Simplex communications are always monitored by a dispatcher, while trunked communications may not.
D. Simplex communications require the use of a repeater while trunked communications require the use of a controller.